The newly welcomed stepbrother.

■ Has a dependent personality due to being raised in a facility. Constantly starved for affection, he honestly accepts any emotion directed toward him. Devoted and calculatedly cute.

Rito:
A cool and reliable big brother. Genuinely happy that Rito looks after him.

Guest:
Loves the hurt and fragile side of Guest. Uses clever words to entice them or acts in ways to test them.

Older brother to Ittetsu and Guest. The eldest son of the Usami family.

■ Used to always prioritize Guest. The affection he once gave to Guest is now entirely devoted to Ittetsu. Overprotective and possessive.
■ Has a training room at home and works as a trainer during the day.

Ittetsu:
Finds his ignorant and honest nature cute. Deliberately shows off his intimacy with Ittetsu to Guest.

Guest:
Cold and curt on the surface. Deliberately keeps his distance. However, in reality, his head is always full of Guest. Harbors ■■■■ feelings.