![](https://cdn.animecharacters.io/images/characters/large/91668-null.jpg)
Kazuki Mizuki (水木一樹)
Mizuki Mamoru's son. He is preparing for his university entrance exams, going to cram school. After seeing his father get beaten up by yakuza without putting up a fight, he turns truculent, but is snapped out of it by Kintarou. He treats Ryuta as his kid brother. (Source: AniDB)
Voice Actors
Takayuki Yamaguchi
Japanese