Фуюмі Ай

Relatives: Yuki Fuyuumi (Younger Brother), Daigoro Fuyuumi (Father)

She is an uptight and by the book member of the Student Council's Hallway Monitoring Committee, it is hinted that she often reprimands Chiwa due to her rowdy behavior along the hallways. Ai is talented at cooking. She and Eita's friend, Kaoru, were classmates in elementary school.

Ai is Eita's fiancée. She is also actually his childhood friend, whom he met 1 year before Chiwa.