Teruhashi Kokomi[]
Kokomi is Makoto’s younger sister and he loves her very much. Unfortunately, his feelings extend beyond normal sibling relations. He believes that he is destined to marry Kokomi one day. She, on the other hand, resents him for his overprotective nature and what he does to Saiki.
Saiki Kusuo[]
Makoto and Kusuo mutually dislike each other. Kusuo is disgusted by Makoto's incestuous feeling towards Kokomi. Makoto thinks that Kusuo is a creep trying to stalk Kokomi at all times, but Kusuo points out that Makoto's the creep, if anyone. The only thing they have ever agreed on is that they don't want Kokomi to become famous, due to the trouble it would cause them. Ironically, Kusuo is the first person who Makoto goes to whenever Kokomi gets upset and yells at him.[1][2]