Pure Bromance

Mayuri's older brother Maki was a violent thug, but after an accident on his high school graduation day, he loses his memory and becomes a sweet six-year-old girl in an eighteen-year-old guy's body. Mayuri is initially creeped out by the drastic change in his brother and their family's acceptance of it, but Maki's adorable charm slowly starts to win him over.

When a gang of thugs comes seeking revenge on the old Maki, Mayuri steps in to protect his brother. As he spends more time with the innocent and affectionate Maki, Mayuri finds himself struggling with unexpected feelings that blur the line between brotherly love and romantic attraction.