Aiko Senoo  

Ai-chan, 妹尾あいこ

Aiko, or AI-chan, initially presents herself as a transfer student from Osaka, which can be inferred from her accent. She is known for her humor and often tells jokes, making her the class clown. Aiko is highly intelligent and excels academically, earning her popularity among her peers. Despite being athletic, she struggles with swimming. Aiko does not have any romantic interests but shows affection towards Leon of FLAT4. Her birthday falls on November 14th, her favorite color is blue, and her instrument of choice is the harmonica. Aiko comes from a divorced family consisting of parents Koji and Atsuko, and she hopes for their reconciliation one day.