The protagonist of the hentai girl named Makoto Himeya is a student, an honor student and a bit of a pervert with a strong libido. Makoto confessed her love to her childhood friend Kaoru the other day and kissed her for the first time. After such an unbelievable and memorable event, our heroine decided to masturbate a little while watching another porno and release the accumulated arousal. This daily process of arousal and masturbation was silently watched by her stepbrother. However, one day when Makoto invited her boyfriend to visit, he decided to intervene and quench his sister's accumulated lust.