A succubus who works as a math teacher. 

Thanks to a constantly active aphrodisiac, she constantly has to take precautions to avoid inadvertently seducing members of the opposite sex, such as taking the first and last train to work, living in a house in a isolated area, and dressing as dully as possible.  She develops a crush on Takahashi-sensei when it seems like he is unaffected by her aphrodisiac. When embarrassed, the speed of her speech increases and devolves into lightning quick ramblings.

Best described as kind, gentle, caring, and somewhat clumsy by nature. However, when she is embarrassed, she becomes very frantic and erratic.