Shuusuke Wakatsuki

Shuusuke is one of the four childhood friends Sana left behind when he moved, and is still one of his new friends when he returned. He is the best friend of Sana and the only male besides Sana himself of the five friends. He is the younger twin of Shuri Wakatsuki. Yuzuki refers him as the bottom of the Wakatsuki twins. Shuusuke, along with his sister Shuri, are abused by their father who is obsessed with being promoted. They live with him, along with a woman who lives with them for their father's money and for sex. Their real mother died before the beginning of the series. To hide the truth about their torn apart family, the twins act silly and light-hearted when in the presence of others.