MDBK-079 To counter the declining birthrate, we're recruiting sperm! Volunteers with big tits to support men donating sperm.

Donating blood is not the only social service! ! In this day and age, we need not only blood but also semen! ! A diary of the efforts of four female volunteers from an organization that promotes donations! ! In order to collect semen of good quality, the semen is collected from the veteran staff to the newcomer staff. In order to collect semen, not only hands and mouths, but also use your own genitals to collect in the vagina! ! It's not a sexual intercourse that makes you feel good, but it's just a means to collect semen. !