- Voiced by: Momoko Ohara
Third year. She is a senior to Kana. Reluctantly nicknamed third generation Banchou in school, Yū gladly hands over the title to Fujioka when she intentionally loses a "Rock-Paper-Scissors" duel to him.
- Character Pairings (Minami-ke)#Yuu's attraction to Kana pertaining to Kana
- Character Pairings (Minami-ke)#Hiroko's crush on Yuu pertaining to Hiroko