Kotegawa Yui/Plot

In the beginning of the series, Yui practically behaved in somewhat bossy way to anyone else, mostly Rito.

Later on, she became more friendly towards others after observing Rito about his true kind nature. Since then, she has been developing feelings for him gradually over the series. As she had unconsciously fallen in love with Rito, she had admitted it in the series of Darkness.

Her love for Rito has significantly influenced herself in actions. as trying to learn more about him by reading his father's manga for talking to him about it.

She has come to understand that although he is interested in sexual actions, all his perverted incidents have been by complete accident, not on purpose, and has become less angry with him when this happens.