Mayo Mitama 三珠真夜

An evil-looking girl who compulsively commits malicious acts. Not wanting to be accused of reacting to stereotypes, people simply assume she is a good girl who only looks evil and whatever she did was not her doing. Just as most girls in the class, she has developed a crush on Nozomu, but can only express her love through harming him. Maria made the comment of her being a tsundere.

Her name derives from mita mama yo, which means "What she is is exactly what she looks."