"Animations and stuff are only for children. No matter how handsome the characters are, what's the use? You don't know what their daily lives are like." Cheng Mu never expected that he would travel through time just because of these casual words to mock his sister? ? He also entered an anime world that he was once familiar with but now despises - protecting his sweetheart? God, please tell her this isn't true... But... I'm just a character that has nothing to do with the plot, so it shouldn't matter. With such a sense of luck, Cheng Mu started his high school life again. But... Why can't I take my eyes off him? Is it possible... To fall in love? ? How is it possible, how could I like someone so much younger than me? It must be an illusion! But… I want to understand. Can a small character who has nothing to do with the plot also have his own perfect ending?