Tatsunobe Ayumi

She is one of a group of eight childhood friends centering on Yoshiya.
She is a troublemaker among her friends and is usually the one who causes a silly commotion, but because she is unusually smart, she is rarely made to pay the consequences and is usually the only one who gets away with it.
It is clear that the true feeling shared by the group of eight is that someone should take the fall for Ayumi.