Ryuji has been fond of his beautiful and intelligent Aunt Izumi since he was a child, idolizing her. Today, the family is staying over at her house, and Ryuji's excitement is at its peak. Actually, a few years ago, when a friend invited him to a brothel, he declined, but for some reason, Aunt Izumi's face flashed through his mind. Although Ryuji is still a virgin, he vaguely thinks it would be nice if his first time could be with his idolized Aunt Izumi.
