Rin Hanei

Itsumi's kouhai from junior high school. She is a bully who will bring up Itsumi's black history and belittle her whenever she sees her. She has consistently rejected Itsumi's attempts to entice her to consume the love potion.
~!When it was revealed that Rin was a tsundere in love with Itsumi, her status was elevated to that of a cute junior.!~