I don't know how to write this thing in the story introduction. . . What I wrote was quite messy. . ? Why did many people say they couldn't understand it? . . Character Introduction Heroine: He Yifan, a chubby girl who died due to unknown events; she remembered everything but forgot the reason for her death; the Lord of Hell said that she should not die, so after her death she became the ghost behind the person she liked; and she worked with Dong Zheng to investigate the cause of her death. Male protagonist: Dong Zheng, He Yifan's crush; a senior one grade above He Yifan; an otaku with a mysterious girlfriend; helping He Yifan investigate the cause of her death. Yu Lan: He Yifan's friend and deskmate during his lifetime; guessed that He Yifan existed in some form; helped Dong Zheng investigate the cause of He Yifan's death. He Yifei: He Yifan's twin brother; suspected that the cause of his sister's death was not a car accident; later helped Dong Zheng investigate the cause of He Yifan's death. Dong Zheng was in a car accident. A female classmate pulled him away and died tragically under the car. He Yifan thought she died like this, but he didn't find out until later. . . . . . I thought I was coming out of a mystery, I thought I was going to clear up the clouds and see the sun, but I didn't expect to be involved in one mystery after another. . . . . . How will a young otaku and an innocent fat girl solve the mystery and find the truth? . . . . . Well, that's it. . . . Don't ask me if it's suspense or romance. . . Can't the two be together? . . Besides, the romance stuff is all YY+. . . . . .