Yui Kawa - 河川唯

The pink-haired classmate of the Kimengumi. She is very pretty and is popular with the male students. However, she isn't always aware of this. She is an oddball herself and has no interest in normal guys. She instead hangs out with Kimengumi and gradually falls in love with Rei. She often likes to become involved with games but is not always aware when she loses.