An unexpected friendship forms between two teenagers as they make a list of 21 things they want to do before the summer ends. ignore all mistakes [nayeon x reader plus other twice ships]

Y/N was a serial killer. He spent the later of his life killing others just for the joy of it. It would lead to him being the most wanted person in Korea. As time went on, he started reflecting on his actions. It was one fateful day when he stumbled upon a building on fire and rushed in to save a child crying for help. He succeeded. At the cost of his own life. But he never expected to be reincarnated with the memories of his past actions. TWICE OT9 x Male!Reader