Protagonists
Yukiteru Amano
; (The First) : :The main male protagonist of the series and the First Diary user. Also known as , he is a reclusive and shy 14-year-old middle school student, opting to be a bystander to incidents around him to write about them in a diary on his cell phone instead. He becomes involved as one of 12 contestants in a 90-day battle royale when, to his shock, his imaginary friend Deus turned out to be a real God of Space-Time, planning to have the sole survivor of the game succeed his throne. Yuki's ordinary diary becomes the , a diary capable of predicting future events happening around him from his point of view. While versatile in any situation, the diary does not state what happens to Yuki himself, and since it is written from his point of view, the entries may not always be accurate. :Unlike most of the contestants, Yuki wishes for a simple, peaceful life. Because Deus considers him a personal favourite to win, he is mainly targeted by other Diary users. Knowing he is weak, cowardly and naïve, he quickly makes friends and allies. One of these is Yuno Gasai, an obsessive stalker who is madly in love with him and will kill to protect both of them. His goal is to not kill anyone; however this outlook has changed when his divorced parents are killed because of the game and Yuno convinces him that becoming the God of Space-Time can bring them back, becoming a ruthless and dishonest player. :Eventually he learns of Yuno's true origins and intentions, finally stepping out of his role as a constant bystander to intervene in changing her future, including those of the other Diary owners that led terrible, unfortunate lives. When trapped by her in an illusionary utopia, he breaks free through his love and force of will to meet her again. A touched Yuno commits suicide to let him win the game. A distraught Yuki refuses to use his godly powers for 10,000 years, until the Third World Yuno returns to him with memories and love of the First World Yuno. as they become the gods of the third world, succeeding Deus without another death game involved. :He is named afterYuno Gasai
; (The Second) : :The main female protagonist of the series and the Second Diary Holder. While a perfect model student on the surface, she is actually a psychopathic ''Minene Uryū
; (The Ninth) : :The secondary female protagonist, the Ninth Diary user and the protagonist of the side-story manga, ''Future Diary: Mosaic''. An infamous atheist terrorist, Minene is a young woman who has hatred against organized religion, particularly on any belief towards God. Her hatred of religion stems from her past when she and parents were traveling in a city in theAru Akise
; : :The secondary male protagonist and the protagonist of the side-story manga, ''Future Diary: Paradox''. One of Yuki's new friends at his new school, Aru is a genius with amazing investigation skills and wants to be a great detective. He becomes involved in the Diary Game to learn the mysteries surrounding it and protect Yuki. Aru has feelings for Yuki that are beyond that of friendship, which angers Yuno. As the games continue, Aru becomes suspicious of Yuno and tries to find out what secrets is she hiding from Yuki. He soon discovers Yuno's origins but also his own when he learns about his creation by Deus as an "observer" to keep on eye on the contestant. He receives the Detective Diary from the Eighth Diary user which can make predictions based on the predictions of the other diaries. It is nearly a perfect diary, except when accounting for Aru's feelings towards Yuki, meaning he can act against what would be a perfect outcome. It also cannot detect the difference between diaries from other universes, which Yuno exploits to defeat him. Despite losing to Yuno, he continues to help Yuki and gives him the clue on Yuno's identity before she decapitates him. In the Third World, Aru is seen alive and continues as Deus' observer, with Reisuke as his detective-in-training. :Aru is the protagonist of ''Paradox'', set in an alternate timeline after Murumuru accidentally kills Yuno and Yuki is mortally wounded by Takao Hiyama. Aru and Murumuru take their respective places as First and Second until Murumuru's alterations have been fixed. However, as the game progresses, Aru sees the horrors of it and decides to save everyone to stop the game. Altering the events of the incident with Tsubaki Kasugano, Aru is able to make allies with a majority of the diary owners. However, his attempt to stop Murumuru from erasing the timeline fails when he stumbles across Yuno and how she killed her Second World counterpart, before being cast back to the start of the survival game. :He has many parallels with Bacchus, including being created from a god and gaining supernatural insight later in life.Diary Game contestants and judges
Diary Holders
Takao Hiyama
; (The Third) : :The Third Diary user. Takao is Yuki's school teacher who is secretly a serial killer who wears a heavyKeigo Kurusu
; (The Fourth) : :The Fourth Diary user. Keigo is a police captain who was chosen for the Diary Game to balance out the other Diary users who were much worse. A composed and calm person, Keigo has no interest in the game and wants to find a way to stop it before more people get hurt, subsequently becoming Yuki's ally. His diary is the , which gives him details of crimes that will happen within the next 90 days, but it cannot predict the future of an investigation done by someone other than himself. :He is introduced helping Yuki and Yuno against Minene after she terrorize their school and latter forms an alliance with them to find and stop the other Diary users. Thanks to his position, he provides police intel for Yuki and Yuno. Later, he joins them to the Omekata cult's shrine where its leader, Tsubaki has held Minene prisoner. While offering Minene to the trio in exchange for help avoiding her own Dead End, they are attacked by Tsubaki's hypnotized cult under the Twelfth's control. At this point, Keigo goes to retrieve Minene, and the two are forced to watch as the Twelfth is killed and Tsubaki betrays Yuki and Yuno, only to die herself. After the battle Keigo helps Minene escape in exchange she becomes his informant and protect his son who is hospitalized due to his condition. :But upon learning that his son's condition is not improving and will die in several weeks, Keigo, desperate to save his son's life, decides to play and win the game. After killing the Tenth Diary user Karyuudo (making him the only Diary user aside from Yuki or Yuno to kill another contestant in the Survival game), he frames Yuki and Yuno for trying to kill him and has the police go on a manhunt for them with orders to shoot to kill on sight. Yuki and Yuno hides at the hospital where Keigo's wife and son are. Minene helps Keigo, but finds out Keigo will kill her after she does so she creates a new future diary alliance with them. Keigo soon has the hospital surrounded and personally leads the SWAT police to kill Yuki, Yuno, Minene and save his family. But unbeknownst to him, Minene was able to sneak out and tells Masumi of what Keigo really did. After a standoff between him and Yuki, Yuki shoots Keigo, wounding him. Masumi places Keigo under arrest, rendering his Investigation Diary useless. Keigo realizes he cannot kill a child and kills himself by destroying his Future Diary. Before dying, he apologizes to Yuki for betraying him and tells Minene to protect his family. Later on, Murumuru revealed that she had warned Keigo about his son's condition to "speed things up", with Deus noting that Fourth was a good candidate to be the last man standing. :Murumuru meets Keigo in a cafe where she tells him he has been chosen to receive a future diary. Keigo tells his backstory about why he became a detective and accepts the phone. :He appears in the alternate universe, being contacted by Minene about his son's cardiac illness, thus changing his future. He confronts the original Yuno when she prepares to murder her Third World counterpart and her family, and fires a bullet at her. Yuki and the Second World Murumuru appear, blocking the bullet, with Keigo silently witnessing the ending events of the survival game. Keigo is later seen two years on with his wife and son. :He alludes to the Roman god Mercury.Reisuke Houjou
; (The Fifth) : :The Fifth Diary user. Reisuke is a five-year-old boy who is very intelligent for his age and a diabolical mind. He sometimes speaks in third person with his hand puppets whom he talks with. Reisuke's diary is the , a coloring book that gives a small summary of the activities that he may perform for the day. However, his diary only shows three entries for the day during the morning, noon, and night. Despite this limit, Reisuke has all three entries at the same time which allows him to ample time so he can carefully plot his next move and be at the right place and time. Reisuke can draw on his Future Diary, giving him some source material other than writing. :Reisuke's parents were members of the Omekata cult who both later committed mass suicide after the police raided their temple. However, Reisuke claims he never loved his parents since they neglected him and wants to win the game to be a "Super Elite" to prove he does not need to depend on adults. But despite these claims, Minene learned Reisuke did love his parents and was devastated when they died. After his parents' death, Mrs. Amano takes care of Reisuke for a few days, as she was a friend of his father. He had grown a fondness to Mrs. Amano, even calling her, "Mama Rea". Due to the fact Yuki and Yuno were responsible for the incident that led to the police raid at the Omekata temple, Reisuke plans to kill them first, holding them responsible for his parents' deaths yet at the same time, he grows fond of them in a uniquely sadistic way, even calling them big brother and big sister. :Reisuke's first attempt at Yuno's life is when he is running around with scissors and slips on the rug. He lands into Yuno's chest, thinking he stabbed her, but she reveals that he stabbed a zabuton instead. After that, Reisuke planned to shower with Yuno by starting a bath, mixing it with salt, and grabbing electrical wires, in hopes to electrocute Yuno to death. With Yuki's Future Diary, he is able to stop Reisuke's plan by causing a power shortage in the house. Yuki and Yuno are on to Reisuke and try to stop him by taking away his Future Diary. Yuno planned to kill Reisuke with hammers but instead, hits Yuki's mom in the back of her neck and causes her to knock out. The day before, Reisuke went to the store with Yuki's mother and mailed his Future Diary to the house. When Yuki intercepts the package and opens it, Reisuke puts on a gas mask and poison gas fills the house. Yuno quickly grabs Yuki into the bathroom to save him. Reisuke has an antidote and tells Yuno to play hide-and-seek for it. With a handkerchief to cover her mouth from the poison, Yuno sets off to find Reisuke but runs into a few tricks and traps along the way. Successfully, Reisuke is able to fill the staircase with water and electrocute Yuno. As Reisuke is about to inject Yuno with poison, Yuki throws a dart at his arm. He and his diary was then stabbed by Yuno. Right before he died, he hands Yuno the antidote and reminds her that only one can win the game. :Murumuru hands Reisuke a diary after playing with him in a park. :As a result of the future change made by Yuki in the alternate universe, Tsubaki and the cult no longer become what they were, this in turn prevents the death of his parents and they become a happy family. :Hōjō means "fertility", linking him toTsubaki Kasugano
; (The Sixth) : :The Sixth Diary user. A physically inept girl with bad eyesight, she is the leader of the where she serves as the group's priestess. The scroll she carries is actually her Future Diary, the which allows her to read what her followers see. She fears traitors from within. :Tsubaki is introduced after Yuki, Yuno and Keigo are invited to her cult's shrine, while in a cage, to help deal with a Diary user who is disguising himself as one of her followers and planning to kill her in exchange she surrenders Minene to them after her cult captured her. Yuki agrees to help her due to her condition and Tsubaki's claim she has no interests in winning the game much to Yuno's jealousy. When the Twelfth diary user Yomotsu takes action to kill Tsubaki by hypnotizing her followers, Yuki and Yuno protects her and kills Yomotsu. However, Tsubaki betrays everyone, revealing she was using Minene as bait to lure them so she could trap and kill them and tells Yuki that she lied about not being interested in the game as she wants to win and end the world as she hates it. :Her parents who were the original leaders of the cult, a religion designed to save the weak and to never give in to wicked thoughts or acts. After her parents were killed in a car crash, Tsubaki became the priestess. However, the cult's second-in-command took over and had Tsubaki locked away in a cage, allowing the male members of the cult to rape her. The only thing keeping her sane was aMarco Ikusaba and Ai Mikami
; and (The Seventh) :''Marco voiced by:''Kamado Ueshita
; (The Eighth) : :The Eighth Diary user. A large, strangely shaped woman, she is in charge of the "Mother's Home" orphanage where Marco, Ai and Orin were raised. Her diary, the , is actually a server that can be accessed by the people she allows in, giving each person their own "Apprentice Diary" that can predict the future in their own various ways. Kamado has no interest in the Diary Game as the only thing she cares about looking after her orphans. Her orphans want her to win as they love Kamado and will kill anyone who harms her. :Kamado is the only diary owner who has no interest in becoming god, and is a pacifist. However, she forms a brief alliance with Yuki to capture John Bacchus. Yuki turns against her, Yuno killing all of her children, prompting Kamado to flee with Bacchus. The two join forces to twist the game, using aKaryuudo Tsukishima
; (The Tenth) : :The Tenth Diary user. A rich man with elegant taste, Karyuudo is a dog breeder who loves and cares about his dogs so much that he neglects his family, to the point that his wife leaves him. His diary is the , which allows him to control his dogs to attack his enemies using his cellphone by voice command. However, it's the disadvantage is that the more dogs that user control, the greater concentration needed to command all of them which leaves the user vulnerable. Karyuudo manipulates his own daughter, Hinata, by telling her to attack Aru Akise, believing that Aru knew that Karyuudo was responsible for the recent savage murders. Also, that Aru was a Diary Holder, though he was mistaken on the latter. He pretends to form a closer kinship with his daughter to agree to this, though he was ultimately revealed to be using her. After his daughter fails to kill Aru, Karyuudo reveals his use for her and tells Hinata not to end up like her father before getting shot in the back of the head, he revealed that Keigo was his murderer to Hinata, Yuki, Yuno, and nearby friends. :Murumuru sneaks into Karyuudo's home and pretends to be a dog. After speaking with Karyuudo, she hands him a phone. :He appears in the alternate universe, with his future changed as Hinata takes a closer dedication to the dogs, this unites them and he no longer neglects his family. :He is named after the Roman goddess Diana, and his daughter takes on the role of Diana.John Bacchus
; (The Eleventh) : :The Eleventh Diary user and final one to be introduced. Bacchus (Balks in the English dub) is the Mayor of Sakurami City and is mastermind behind the Diary Game as he was the one who convince Deus to create the battle royal that will determine Deus' successor. Bacchus diary is the Watcher Diary ("The Watcher" in the Japanese version) which enables him to read the other diary users entries including the Apprentice Diary users. The diary's powers can be countered if the user of the diary changes the information that comes up, before it is viewed on the Watcher Diary. A believer in Nazi ideology, Bacchus' main goal is to create a race of superior beings with him as their leader. Despite his ideology, he is a gentleman, befriending Kamado and inviting her to help him in his place to give everyone in Sakurami City the power of the Future Diaries. :He was Kurou Amano's employer who sent him to destroy Yuki's phone. After Kurou failed to accomplish his task, Bacchus has his men assassinate him. Yuki quickly vows revenge and launches an attack on Bacchus' forces located in a pair of identical business towers. Bacchus takes shelter in a bank vault, the bank once run by Yuno's parents. The only way to gain entry is through a retinal scanner which only he and the Gasai family can access, believing Yuno is unable to since Akise assumed she was an impersonator. Minene tries to blow apart the vault at the cost of her life, but fails. Yuno drags Yuki away, but returns, using the retinal scanner to enter the vault and kill Bacchus. :In the Third World created by Yuno, Bacchus' decision to create the Future Diaries is altered when he reads of his own death by observing Yuki's phone, cancelling out the survival game. :His surname directly refers to the Roman godYomotsu Hirasaka
; (The Twelfth) : :The Twelfth Diary user. Blind and insane, he is a vigilante who acts like aAzami Kirisaki
; (The Thirteenth) : :The Thirteenth Diary Owner, who appears exclusively in the PSPDeities
Deus ex Machina
; : :The God of Time and Space and the Diary Game overseer and creator. Yuki always assumed that Deus was just his imaginary friend only to learn he is in fact real. Convinced by John Bacchus' partnership, Deus created the Diary Game to find a worthy successor to take over his place. The reason he creates the game is because his life is coming to an end. Deus seems to favor Yuki and most likely wants him as his successor. He also favors on Minene, transferring his knowledge and half of his power to her and thus, making his death approaching faster than anticipated. He admits that she is the only one he can rely on at that point in time, to stop First World Murumuru. He even tells her that she is correct when Minene asked if Eleventh's diary is the ability to spy on other people's diaries, since Deus believed John to create a new futuristic race. :In the Third World, the future diary survival game never happens. Deus breaks the wall of space-time, connecting a path to 10,000 years later in the future of the Second World, allowing Yuki and the Third World Yuno to succeed after him as gods.Murumuru
; : :Mur Mur in the English dubbed version, she is a brown, white haired girl with a black point-tipped tail who is Deus' servant. She has an almost chibi-like appearance and is dressed rather provocatively, wearing a closed pink vest, panty-like shorts, large wide-brimmed stockings and a large open-topped nurse cap with valentine-hearts printed on each side. She has a rather playful and nonchalant attitude toward Deus and the other Diary users. Most of the time she serves as the comic relief of the series. She poses as a major antagonist towards the end of both the main series and ''Future Diary: Paradox'', scheming behind Deus for her own personal fun. Like Yuno, Murumuru originates from the First World, having enjoyed the survival game so much that she performs a time leap with Yuno to the Second World, traps her alternate self in Yuno's illusions, and gives Yuno her second Future Diary. After Deus dies, Murumuru declares herself God until the second game is won, but the future of the Third World is altered through numerous catalysts. The Second World Murumuru escapes from Yuno's illusions with Yuki, beating down her First World self. Both Murumuru, along with her Third World self, reappear with Deus and Yuno in the Third World when Yuki and Yuno reunite. :She is named after Murmur, one of the 72 Goetic demons.Other characters
Friends
Masumi Nishijima
; : :Chief Investigator and Keigo's subordinate within the police. He is an ally of Yuki within the police force. In ''Mirai Nikki: Mosaic'', Masumi is interested in Minene, when the latter disguised herself as a police detective she killed. Even when he learns her real identity as a terrorist, Masumi still continues pursuing a relationship with Minene, much to the latter's confusion. After the incident where Keigo commits suicide, he entrusts Masumi his role of balancing out the other Diary users. Masumi was killed by the Eleventh's men by using himself as a shield of gun shots to protect Minene. In the Third World, Masumi and the Second World Minene is shown to be living happily with their children.Ouji Kosaka
; : :A classmate of Yuki's who used to bully him in the past but later became his friend during the Diary Game. He receive his "Kosaka King Diary" from the Eighth Diary user. This diary records any "triumphs" that Kosaka achieves in the future. Its usefulness is limited, however, as Kosaka views everything he does correctly as a great personal triumph, regardless of how small the task. Another serious shortcoming of his diary is that it only records when Kosaka will succeed, and therefore will not update if he is going to fail. He revealed the reason he bullies Yuki is because his 'crybaby face' reminds him of a stupid dog of his. Yuki gets mad and kills him with a pistol. In the Third World, he is seen with Karyuudo, Hinata and Mao.Hinata Hino
; : :One of Yuki's new friends in his new school. Her father is actually Karyuudo Tsukishima, the Tenth Diary user. Although she initially attempted to kill Aru she did so under her father's promise (later revealed to be a lie) that they could be a family again. After her father's death, she helps Yuki whenever possible. She receive her "Friendship Diary" that predicts her friends' actions, from Eighth Diary user. In the Second World, she is killed by Yuki after a failed attempt to convince Yuki the fact that the resurrection of his parents would be impossible even if he were to become god. In the Third World, she is seen with her father and friends.Mao Nonosaka
; : :One of Yuki's new friends in his new school. She is a quiet, polite girl who is constantly photographing the things around her, though her photos mainly center on Hinata. She is in love with Hinata and would do anything for her. She received her "Hinata Love-Love Diary", which allows her to predict Hinata's future similarly to the way Yuno predicts Yuki's, from the Eighth Diary user. In the Second World, she is killed by Yuki after calling him a coward. In the Third World, she is seen with Aru, Kosaka and Hinata.Amano family
Rea Amano
; : :Yuki's mother who is rarely at home because of her work as a video game programmer. Despite this, she has a very casual and close relationship with her son and even approved Yuno as his girlfriend. However, Rea is oblivious of her son's involvement in the Diary Game and Yuno's true nature. Prior to the series, she divorced her husband, Kurou, for gaining a large debt. She later confronts her ex-husband and is killed by him, unintentionally, when he stabs her for dragging him back to the Sakurami Tower. In the alternative universe, she is seen alive along with her husband, Third World Yuki, and Yuki's new girlfriend Moe Wakaba. :She is named after Rhea, the mother ofKurou Amano
; : :Yuki's father, who is divorced from his wife for gaining a large debt. He appears later trying to reconcile with Yuki and their family. However, this is a facade as Kurou is secretly working under John Bacchus to destroy Yuki's diary without knowing it will kill Yuki, in exchange of having his debts paid. But his plans are foiled by Marco and Ai, forcing him to escape only to encounter his ex-wife whom he accidentally kills. Kurou starts to feel guilt and a desire to make up to his son for what he has done. When he is at a shrine with his son, he is stabbed in the abdomen by Bacchus' men. :He is named afterGasai family
Saika Gasai
; : :Yuno's adoptive mother. Though dead throughout the majority of the storyline, she is shown in the past to have abused and locked Yuno in a cage, and vents her frustrations on her, claiming she is a bad daughter. Saika's abuse of Yuno is apparently fueled by her own insecurities and self-hatred. In the alternative universe, when the First World Yuno tried to assassinate her Third World self, Saika defends her, and her viewpoint towards her daughter changes for the better.Ushio Gasai
; : :Yuno's adoptive father. He is known to run the Sakurami City bank that Bacchus uses as a shelter during the invasion where Yuki and Yuno attempt to assassinate Bacchus to win the Survival Game. Unlike Saika, Ushio was never directly abusive towards Yuno, but he intentionally worked longer hours as a means of avoiding Saika due to her ever-increasing emotional instability. Because he was not around, Saika's abuse of Yuno continued unchecked. In the alternative universe, Ushio shown to be a much more caring man to his daughter.Minor
Orin Miyashiro
; : :A member of Tsubaki's cult and a personal friend of Ai. After the Omekata cult incident, she is seen as an assistant to Kamado. Her diary is the "Orphanage Diary" which predicts Kamado's orphans actions. She speaks with a polite, yet sarcastic tone. Orin's head is sliced off by Yuno as part of the plan to kill off Kamado. In the Third World, she is seen with Tarou.Tarou Nanba
; : :Nicknamed , is one of the orphans Kamado took care of. He is very determined to make sure she succeeds in the survival game, feeling she is the only person who can make a better world for the orphans. His diary is the "Copy Diary" and can mirror the abilities of other diaries. He is very strict with Ai and Marco to the point that both dislike his attitude and think he is annoying. He is killed by Yuno, moments after realizing he was only used as a pawn. In the Third World, he is seen with Orin.Funatsu
; : :The second-in-command of Tsubaki's cult. He is responsible for her parents' death as well as the constant raping she suffers at the hands of the cult members, not wanting the cult to disband, according to her parents' decision, and took over leadership. In the alternate universe, he is caught trying to insert a makeshift bomb within Tsubaki's parents' car, changing the future of the cult and Reisuke's family.Ryuji Kurosaki
; : :He is the secretary of Sakurami City. His diary is the "Secretary Diary", which records all of the Mayor's actions. He is killed by Bacchus for becoming a security risk when it is revealed that he will in the future be captured and give up the passwords for the vault in which they are taking shelter. In the anime, Ryuji is tortured and killed by Minene instead.Moe Wakaba
; : :Moe is Yukiteru Amano and Yuno Gasai's classmate one year prior to the events of the series. Yukiteru had a crush on her but she turns him down after he gives her a love letter, much to Yuno's relief. Moe reappears in the Third World, after Yuno traps Yuki in an illusion world in which Yuno does not exist, and Yuki can have anything he wants, and Moe is the girl Yuki wants, but Yuki denies her (while, in the anime, she even undresses to seduce him). After the Survival Game concludes, the Moe of the Third World is in a romantic relationship with the Yukiteru of the Third World, as such both are seen holding hands and smiling at one another.References
{{Future Diary