Keikouin Yuki

Class: 1-A
Favorite food: Grilled fish (especially saury)
Hobbies: Reading, calligraphy, billiard, table tennis
Troubles: Has no idea how to masturbate.

Despite her very lady-like personality or for the facts that she's the ace of the tennis club and has the biggest boobs in the whole academy, Yuki does not look down on anything or anyone. In fact, she is very mild-mannered and kind but acts like a tsundere when she's around Yuuya, her upperclassman. For some reason, her pitch perfect personality and stunning appearance keeps "ordinary" people away from her.

She is best friends with both Tsukie and Urara, and Yuuya calls them the "Setsugekka Trio".