HMN-829 Sumire Kuramoto became the sex practice dummy for a tomboyish girl (her son's childhood friend) who was just beginning to awaken to her sexuality, and made her orgasm over and over again with internal ejaculation.

Sumire-chan, my son's childhood friend, is a tomboyish girl who doesn't yet have any knowledge of sex or fashion, but she has pretty features and will probably grow up to be a beauty. She's good friends with my son and often comes over to play. One day, Sumire-chan peeked in on my son while he was masturbating...