Yui Kotegawa

Height: 162 cm Yui is a girl in Ritos class who seems a good deal more conservative than the others except in the anime where shes downright being portrayed as a school nazi ruling the hallways with an iron fist which is partially caused by her prettyboy brother and his habit of going out with different girls on a regular basis. She quickly comes at odds with Lala and her freespirited personality which she sees as a hindrance towards making the school a more peaceful and better place.