Go Yoon-hwan, better known by his stage name Ryeoun, is a South Korean actor. He is best known for his roles in 18 Again, The World of My 17, Adult Trainee and Twinkling Watermelon. From Wikipedia
The new season follows Yeon Si-eun as he navigates a harsher school environment, confronts darker forces, and wrestles with guilt from past events.
