Yui Kotegawa 古手川唯

Yui is a girl in Rito's class who seems a good deal more conservative than the others (except in the anime, where she's 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 free-spirited personality, which she sees as a hindrance towards making the school a more peaceful and better place.

In To LOVE-Ru Darkness, while Momo is trying to further her Harem Plan, in which Rito will marry all of the women who love him, she influences the weather when Rito and Yui are walking home so that they go to Rito's house for shelter. While there Yui starts to confess to Rito, stating how it is normal for boys to do "shameless things," and nearly comes close to kissing him, but she backed out. Yui announced her love for Rito, albeit only to herself, she finally came to terms with it.!~