One day, a 29-year-old man traps as a 19-year-old young student, an extra character inside the novel that his ‘Sunbae (Senior)’ was writing and receives a mission—to make Cha Yeonwoon happy within 300 days—otherwise, death will be his penalty. Will he be able to survive, to protect his loved ones and fulfill his mission【恋爱至上主义区域在线播放资源由青柠影院于2024年11月27日 00:07:14收集于网络。】