is a Japanese
web
Web most often refers to:
* Spider web, a silken structure created by the animal
* World Wide Web or the Web, an Internet-based hypertext system
Web, WEB, or the Web may also refer to:
Computing
* WEB, a literate programming system created by ...
manga
are comics or graphic novels originating from Japan. Most manga conform to a style developed in Japan in the late 19th century, and the form has a long history in earlier Japanese art. The term is used in Japan to refer to both comics ...
series written and illustrated by . It was published on
Shueisha
is a Japanese publishing company headquartered in Chiyoda, Tokyo, Japan. Shueisha is the largest publishing company in Japan. It was established in 1925 as the entertainment-related publishing division of Japanese publisher Shogakukan. The ...
's web platform ''
Shōnen Jump+
is a manga platform created by Shueisha. Launched on September 22, 2014, it operates as a free mobile app and website. Jump+ serializes original titles and titles from other Shueisha manga magazines, and also carries digital editions of ''Weekl ...
'' from December 2021 to March 2022, with its chapters collected in two volumes. An
original net animation
An original net animation (ONA), known in Japan as , is an anime that is directly released onto the Internet. ONAs may also have been aired on television if they were first directly released on the Internet. The name mirrors original video animat ...
(ONA) adaptation produced by premiered in June 2025.
Plot
In 2016, Nnu-Anu-Kf, an alien hailing from the Happy Planet, crash-lands on Earth in order to spread happiness to others. After evading capture, it comes across Shizuka Kuze, a 9-year-old girl who is bullied at school and only finds solace with her dog Chappy. Shizuka, noting that it resembles an octopus, names the alien Takopi. Takopi decides to use its planet's Happy Gadgets to help Shizuka, but after seeing her, face scratched and bruised all over while holding Chappy's leash, Shizuka asks for one of Takopi's gadgets and uses it to commit suicide. Realizing the gravity of the situation, Takopi uses another gadget to travel back in time, hoping that it can improve Shizuka's life.
Characters
;
:
:A Happian alien from the Happy Planet who resembles an octopus. Takopi's goal is to spread happiness to others through their various gadgets, though their innocent and simplistic worldview is challenged as they confront the complex
morality
Morality () is the categorization of intentions, Decision-making, decisions and Social actions, actions into those that are ''proper'', or ''right'', and those that are ''improper'', or ''wrong''. Morality can be a body of standards or principle ...
and nature of human beings. It is revealed later on that prior to the start of the series, Takopi had first met Marina who at that point was in middle school. Marina revealed how she believed that Shizuka was responsible for all her misfortune and wanted her dead, prompting Takopi send themselves back in time to kill Shizuka. But as a result, Takopi lost their memories and forgot their objective, and ended up befriending their target instead. But seeing as their actions were doing more harm than good, Takopi sacrificed themselves to reset the timeline to give both Shizuka and Marina a better future.
;
:
:A young girl whom Takopi befriends upon their arrival on Earth. She is the subject of bullying in her school due to her mother's work as an
escort and only finds solace at home with her pet dog Chappy. But she ends up committing suicide after Marina had her dog taken away by animal control, luckily Shizuka is saved by Takopi turning back time. As time goes on, she slowly starts to unravel as she feels like she is alone. Eventually, she travels to where her biological father is, but learns that he has a new family and decides to destroy his happiness. But Takopi seeing that their actions did more harm than good, sacrificed themselves to reset the timeline. In the new timeline, Shizuka and Marina end up becoming best friends after realizing that they are bonded together through Takopi.
;
:
:Shizuka's classmate who is her bully, often mocking her family situation. It is later revealed that Marina is a victim of abuse from her mother, due to her father cheating on her with Shizuka's mother. Later on, Takopi remembers that they met Marina prior to the start of the series and had decided to kill Shizuka by sending themselves back in time as that's what Marina wanted. Unfortunately, they lost their memories and forgot their objective. Takopi ends up accidentally killing Marina and ends up taking her place, but soon realizes that they did more harm than good. Takopi ends up sacrificing themselves to reset the timeline to give both Shizuka and Marina a better future. In the new timeline, Marina and Shizuka end up becoming best friends as they realize that they were bonded together through Takopi.
;
:
:Shizuka's classmate who tries to support her in any way he can, despite Shizuka repeatedly turning down his help. It is revealed later on that Naoki was being pressured by his mother as she compared him to his older brother who was much more talented than him. Naoki was depressed due to his mother constantly calling him a failure and always expecting him to do just as well as his older brother. Naoki eventually learns about Takopi and Marina's death and helps Shizuka by covering it up. Eventually, Naoki and his older brother reconcile, with Naoki confessing to killing Marina at Shizuka's persuasion. In the new timeline, Naoki is shown interacting more with his other friends and is regretfully avoiding Shizuka.
Media
Manga
Written and illustrated by , ''Takopi's Original Sin'' was published on
Shueisha
is a Japanese publishing company headquartered in Chiyoda, Tokyo, Japan. Shueisha is the largest publishing company in Japan. It was established in 1925 as the entertainment-related publishing division of Japanese publisher Shogakukan. The ...
's web platform ''
Shōnen Jump+
is a manga platform created by Shueisha. Launched on September 22, 2014, it operates as a free mobile app and website. Jump+ serializes original titles and titles from other Shueisha manga magazines, and also carries digital editions of ''Weekl ...
'' from December 10, 2021, to March 25, 2022. Shueisha collected its sixteen chapters in two volumes, released on March 4 and April 4, 2022.
Shueisha's ''
Manga Plus
''Manga Plus'' (stylized as ''MANGA Plus by SHUEISHA'') is an online manga platform and smartphone app owned by Shueisha that was launched on January 28, 2019. It is available worldwide except in Japan, China, and South Korea which already hav ...
'' service published chapters of the series in English simultaneously with their Japanese release. In February 2023,
Viz Media
Viz Media, LLC is an American entertainment company headquartered in San Francisco, California, focused on publishing manga, and distribution and licensing Japanese anime, films, and television series.
The company was founded in 1986 as Viz, ...
announced that it licensed the manga for English publication; the series was released as a single volume on November 21 of that same year.
Volumes
Anime
In December 2024, it was announced that the series would receive an
anime
is a Traditional animation, hand-drawn and computer animation, computer-generated animation originating from Japan. Outside Japan and in English, ''anime'' refers specifically to animation produced in Japan. However, , in Japan and in Ja ...
adaptation. It was later revealed to be an
original net animation
An original net animation (ONA), known in Japan as , is an anime that is directly released onto the Internet. ONAs may also have been aired on television if they were first directly released on the Internet. The name mirrors original video animat ...
(ONA) produced by Enishiya, with
TBS handling planning and production duties. The six-episode series is directed and written by Shinya Iino, with character designs handled by Keita Nagahara and music composed by Yoshiaki Fujisawa.
The series premiered on June 28, 2025, on various streaming platforms, including
Netflix
Netflix is an American subscription video on-demand over-the-top streaming service. The service primarily distributes original and acquired films and television shows from various genres, and it is available internationally in multiple lang ...
,
Amazon Prime Video
Amazon Prime Video, known simply as Prime Video, is an American subscription video on-demand over-the-top streaming television service owned by Amazon. The service primarily distributes films and television series produced or co-produced by ...
,
Abema
is a Japanese streaming service that launched on April 11, 2016, under the name It is majority-owned by CyberAgent, with a 55.2% stake, and TV Asahi, with a 36.8% stake, while the remaining ownership belongs to various other companies, mostl ...
and
U-Next
is a Japanese over-the-top streaming service. It is majority-owned by U-Next Holdings and minority-owned by TBS Holdings and Hakuhodo DY Media Partners. It was launched in 2007 as GyaO Next and is a large streaming platforms in Japan, with 4. ...
. The opening theme song is , performed by
Ano, while the ending theme song is , performed by .
Crunchyroll
Crunchyroll is an American Video on demand#Subscription models, subscription video on-demand Over-the-top media service, over-the-top Streaming media, streaming service owned by Sony, Sony Group Corporation. The service primarily distributes fi ...
is streaming the series.
Medialink
Medialink Group Limited is a content distributor and licensor based in Kowloon, Hong Kong specializing in the distribution of Japanese anime and brand licensing. Its offices are located at Mody Road, Tsim Sha Tsui.
Registered from Hong Ko ...
licensed the series in Asia-Pacific for streaming on Ani-One Asia's YouTube channel.
Episodes
Reception
''Takopi's Original Sin'' won the Excellence Prize at the 51st
Japan Cartoonists Association Awards in 2022. The series ranked third in the 2023 edition of
Takarajimasha
is a Japanese publishing company based in Chiyoda, Tokyo. It is known for publishing subculture-oriented fashion magazines aimed at teens, fashion magazines in general, as well as guide books.
History
The company was founded on September 22, ...
's ''
Kono Manga ga Sugoi!
is an annual reference mook series published by Takarajimasha since 2005 featuring yearly rankings and reviews of manga. The rankings are compiled by surveying professionals in the manga and publishing industry. The first two years saw two s ...
'' list of best manga for male readers. The series ranked ninth on "The Best Manga 2023 Kono Manga wo Yome!" ranking by ''Freestyle'' magazine. It was nominated for the 16th
Manga Taishō
The is a Japanese List of comics awards, comics award recognizing achievement in manga. It is awarded annually to a manga series published in the previous calendar year of eight or fewer Tankōbon, collected volumes in length. The Manga Taish� ...
in 2023, and ranked 10th out of 11 nominees; it has been nominated for the 27th
Tezuka Osamu Cultural Prize
Named after Osamu Tezuka, the is a yearly manga prize awarded to manga artists or their works that follow the Osamu Tezuka manga approach founded and sponsored by Asahi Shimbun. The prize has been awarded since 1997, in Tokyo, Japan.
Current ...
in the same year. The manga was nominated for the 54th
Seiun Award
The is a Japanese speculative fiction award given each year for the best science fiction works and achievements during the previous calendar year. Organized and overseen by , the awards are given at the annual Nihon SF Taikai, Japan Science Fic ...
in the Best Comic category in 2023.
In February 2022, it was reported that the series surpassed the 2 million views per day on the ''Shōnen Jump+'' platform. The first volume sold 41,277 copies in its first week, and the second volume sold 198,505 copies in its first week. By May 2022, the manga had over 1.2 million copies in circulation, including
digital versions.
See also
* ''
The Ichinose Family's Deadly Sins'', another manga series by the same author
Notes
References
External links
*
*
*
{{Shōnen Jump Plus
2021 webcomic debuts
2022 webcomic endings
2025 anime ONAs
Anime and manga about time travel
Anime series based on manga
Child abuse in fiction
Crunchyroll anime
Drama anime and manga
Dystopian anime and manga
Fiction about bullying
Fiction about suicide
Fiction set in 2016
Horror anime and manga
Japanese time travel television series
Japanese webcomics
Medialink
Science fiction anime and manga
Shōnen manga
Shueisha manga
Time loop anime and manga
Viz Media manga
Webcomics in print