In fact, when Chiba Che found out that the world he was reincarnated in was "Tutor", he just accepted the reality in a daze. But one day, he suddenly discovered that the two Chinese characters "Sawada" were written horizontally and vertically on the white door sign next to his house, but he couldn't help but raise the standard middle finger, which successfully destroyed his image of "the gentle big brother next door" in the mind of Shota Tsunayoshi, who had just returned home from school.
At that time, Tsunayoshi was five years old and he was nine.
Later he realized that there were some things that he really couldn't escape...