- Official name：河合井コタロー
- English name：Kotarou Kawaii
- Chinese name：河合井小太郎
- Other names：かわいい こたろー / Kawaii Kotarō
- Gender：Male
『Kotarou Kawaii』
Kotarou Kawaii is a middle-schooler who, years ago, made a slime that came to life and named it Puniru.
He loves cute things, but refuses to call Puniru cute because she annoys him.
He has a crush on his senpai from school, Mami Kirara.
Play in works
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