Ryeoun

Go Yoon-hwan (Korean: 고윤환; born August 26, 1998), better known by his stage name Ryeoun (려운), is a South Korean actor. He is best known for his roles in 18 Again (2020), The World of My 17 (2020), Adult Trainee (2021), Twinkling Watermelon (2023), and Weak Hero Class 2 (2025). In 2023, he had his first and second television lead roles in The Secret Romantic Guesthouse and Twinkling Watermelon.