Mizukami Leito

Nao's younger brother. They moved out of the city together. Although the two of them live together, Leito is mainly in charge of the housework.

He holds a cold attitude towards his brother. In general, he has a taciturn and blunt personality. In order to avoid trouble, he has a bad habit of holding his emotions until they reach their limit.

He spends a lot of time with his classmate Yuzuki.