Marin-chan attends Ultra Princess School. But one day, she is transformed into a maid as a "servant to serve a man" because of the conspiracy of Dr. Narutaki and Marilyn's "Japanese preservation plan." In order to return to the original Marin-chan, we have to do endless naughty service to men and collect sperm from Nantes! What happens to Marin-chan!?

Marin, a super young girl who was tossed by a strange fate and collected sperm as a "maiden of love and service". South Pole One of Marin's fate rival "Sexaloid". The battleground between those two is a sperm-free battle!! Which one quickly exits the sperm of 100 men who have the talented sperm collected by a huge power? The "Big Orgy Tournament" is called a battle without sperm, where you can use your hands, mouth, chest, of course, Omako, and even your ass hole to receive multiple sperm. Who controls this nasty party...?