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

Blood donation isn't the only form of social service! In today's world, we need semen as well! The struggle of four female volunteers from an organization promoting semen donation! To collect high-quality semen, everyone from veteran staff to new recruits is busy at work. Not just using hands and mouths, but even their own genitals for vaginal collection! This isn't about having pleasure; it's purely for the sake of collecting semen while suppressing their voices. Watch as they diligently collect semen!