Ichirou Satou, formerly known as "Maryuuin Kouga" when he was in middle school, had to endure severe bullying due to his hero persona. Consequently, he decided to forsake his beliefs and blend in during high school. Yet, Ichirou felt bored with his monotonous lifestyle. One fateful night, he found himself back in school to fetch a book, and that is when he met a girl, Ryouko Satou, dressed in a bizarre costume. As it turned out, she suffered from the same delusion Ichirou had experienced in the past. She believed she was someone else and dressed accordingly. The following day, their teacher requested that Ichirou befriend Ryouko, but he was not keen on revisiting his past. When he saw Ryouko being bullied, he assumed his mantle as her protector and helped her to overcome the same challenges he encountered as Maryuuin Kouga.