Sonoa Mitsui

Sonoa Mitsui is a standout second-year university student who calls Tachibana-kan her unlikely home. Her move to the aging dormitory came after a chance rescue by Yū Tsukishiro during a dangerous night at an izakaya. On the surface, she carries herself with an air of superiority and rarely misses a chance to gripe about the worn-down facilities—yet beneath that polished exterior lies a genuinely warm-hearted senior who quietly looks out for those around her. Add a few drinks to the mix, and her composed demeanor gives way to a surprisingly uninhibited side. Living alongside the dormitory's colorful cast of residents, she gradually finds herself at home in the lively chaos of Tachibana-kan.