Itsuki Iwatsuki is one of the characters in the series.
Childhood friend to Sakuya, Itsuki is considered as a golden-prize of a women by Yuuto's standards. She wears glasses, is a tsundere, have big breasts and is also the class rep, all aspects which Yuuto considers as part of the royal-road for a girlfriend. But Sakuya does not pay attention to her, and is also oblivious to her feelings. Day by day, Sakuya receives the beatings because of this fault.