鈴木 由真

Eriko's friend since middle-school. The two got off to a bad start, but found they had interests in common. Yuma has dyed blonde hair. Yuma has made a career of being the school's best cheater, although she still gets bad grades. She has a younger sister, Momoka. Yuma often pairs up with Eriko, such as in Episode 2 and Episode 7. She is the most short-tempered of the group. Her bunches are something of a trademark, as Odagiri didn't recognize her from behind when she wore it in a bun. She tends to lack in prudence, and ever willing to have fun.