Yuu Ayase (Boyfriend)

Athletically Challenged: He's a small and skinny guy who is comically unathletic, shocking the other students with just how poor his performance is when he's forced into a boxing match. Chick Magnet: Yuu has managed, with his kindness and selflessness.

Crazy-Prepared: Despite his overall averageness in terms of his abilities, he does extensive research into remembering what each of the Mikadono sister likes/dislikes, and tries to make meals/snacks based on what they like or ask him. He also does what he can to support them, such as going on a Not a Date with Kazuki to help prepare her for feminine roles after specializing in male ones

This is Yuu Ayase from the Mikadono Sisters anime. He's a short, thin, red-haired man. He's 19 years old.

His adoptive sisters are Kazuki, Miwa and Niko Mikadono.