Age gap love story between a student and his acting guardian/brother's bestfriend. Hibari lost his brother due to an accident and was therefore taken in by Sumi - his brother's bestfriend. Sumi acts like Hibari's guardian and family since he blames himself for Misago's (Hibari's brother) death. Both have feelings for each other but they're stuck with the feeling of guilt - Sumi struggling with his guardian role, and Hibari thinking that he doesn't deserve to be happy (he had an argument with his brother before the accident)
Nakanai Hibari