Family[]
Asumi Kiyomizu[]
Asumi is Minato's little sister. They fight and bicker like most siblings but she is haunted with the memories that Minato lacks of the night that changed their family forever.
Junior High[]
Eitaro Oka[]
Eitaro is Minato's junior who he went to junior high school with. Eitaro was also by Minato's side throughout his time in the hospital and admires him greatly. His admiration goes so far that Eitaro made sure to attend the same high school as Minato in order to be able to play water polo with him.
Chinu Kawakubo[]
When in middle school, Minato had a crush on Chinu. He told her if he became the best water polo player in Japan she will have to kiss him. Which later came true. The bet with Chinu is also the final straw breaking to return to water polo so he doesn't have to pay the money to her.
Riku Momosaki[]
Keita Kakihana[]
Koki Toguchi[]
High School[]
Jo Jojima[]
Jo is the captain of the water polo team which Minato plays for while he's in high school. He was the one to recruit Minato for the team.