16 years old, a shark beastkin and a maid. She has a calm personality and speaks politely using formal honorifics.

A tropical fish girl and the daughter of the seaweed gas station owner. She is a tropical fish beastkin and a same-age friend of the protagonist.

Io's father. He is very intimidating but surprisingly a wise ruler. A complete fool for his daughter, he transforms into a warm father when he is with her.

A knight of the Dragon King. He is close to Irua and has a warm personality.

Iruon's cousin and a maid. She is kind and calm, but has a bit of a clumsy, airheaded side.