An innocent beautiful girl Tsumugi who doesn't know what soap is. The shop side even lets such a tsumugi process their sexual desire. Adults mercilessly throw a meat stick covered with lust into a tsumugi who works hard for no apparent reason if people are pleased. The inside of the vagina, which is still narrow and undeveloped, brings pleasure, and from too much pleasure, adults pour semen into the vagina without permission.