Kazuma Mamizuka

[Takuma](https://anilist.co/character/125260/Mamizuka-Takuma)'s younger brother as well as his twin. Oftentimes teary-eyed. [Mamizuka Umi](https://anilist.co/character/237105/Mamizuka-Umi) (the P.E. teacher) is his mom and [Mamizuka Kousuke](https://anilist.co/character/237176/Mamizuka-Kousuke) (the actor) is his dad.