SSR-012 I, a virgin, was toyed with by the charming OL who is my sister’s coworker

One day, when college student Wataru comes home, he finds his older sister and her colleague, a beautiful OL trio, having a drinking party. Attractive older sisters who are interested in naive Nawataru seduce Wataru one after another with their adult charm as weapons. It is packed with exciting situations that every boy dreams of, such as being fucked in a kimono! !