Rin Eba

Itsuki's younger sister and Yuzuki's step sister, who is a year older than her. She is quite fond of her older brother and is irritated by Yuzuki, saying that she acts nice just for attention. She is also known to tell lies in order to make Yuzuki upset. She is mischievous and loves to cause trouble. She shows a slight interest in Haruto. (Source: Wikipedia)