The deuteragonist of Isshuukan Friends. She is very introverted; as she prefers total solitude and will rarely communicate with others.

Spoiler

Due to her chronic memory loss, she forgets about everyone who she has communicated to (with some exceptions, like her parents, for example). This results in Yuuki wanting to befriend her, as to make her more generally happy and more extroverted, even forbearing the fact that her memories will disappear.