A swimsuit-clad girl, fresh from the pool, is penetrated by middle-aged men who ejaculate into her. Her vagina is soaked through. (Matsuoka Mio, CAWD-625)

Mio, who joined a swimming class, was always alone because she came from a dual-income family. Lacking any knowledge of sex, Mio was a naive girl who couldn't even swim. Today, the pool was only occupied by the instructor and other men. During practice, she was surrounded by the men. They made her lick and touch their penises, and finally inserted them into her genitals. Mio, sprayed with a lot of white urine, had no idea what was happening. After the lesson, she was taken to a place where even more men had gathered. She kept it a secret from her parents…