SSR-012 I, a virgin, was played with by my sister's colleague, an attractive and beautiful office lady.

One day, when university student Wataru returns home, he finds his sister and her colleague, three beautiful office ladies, having a drinking party. Attractive older ladies who are interested in the naive Wataru use their mature charms to seduce Wataru one after another. They make him dress up as a woman and play with his dick, and he rides her in cowgirl position next to her drunk sister. Full of exciting situations that every boy dreams of, such as being raped!