Yamada is a middle-aged, unremarkable salaryman. He releases his work and family stress by bumping into people on the street indiscriminately, known as 'the bumper uncle.' This was his only sense of superiority. One day, while commuting, he strongly bumps into a high school girl with a strong sense of justice, Ruru, and earns her fierce anger. 'You're the worst!' "That's disgusting!" With this contemptuous remark, Yamada finally couldn't take it anymore. He used a mind control app he got online to brainwash Ruru. Initially, he only intended to make her apologize and respect him...
