Start by Saving Mai-Senpai

Puberty Syndrome - This is a mysterious phenomenon that only occurs in the sensitive and unstable period of adolescence. It is a long-standing urban legend. It is said that patients will suffer from supernatural phenomena such as "hearing other people's voices", "seeing someone's future", or "someone and someone else's personality swapping". "Oh, isn't this just Chuunibyou?" Guanyue Zhenzhi smiled secretly in his heart when he suddenly discovered—— "The second disease is actually me?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.