2069 A.D. A dramatic evolution has appeared in the human body. Whether for prosperity of offspring or for some other reason, an addictive substance called Spermanion began to be produced in the man's semen. Women began to over-exploit Sperm for its powerful awakening effect and addiction. Countries around the world have enacted treaties and created laws to designate and ban sperm, but due to its extraordinary dependence, there is no end to users, and the sale of sperm in the dark becomes rampant. It may have been inevitable that a villainous group of men who kidnapped and imprisoned men for their own self-interest, squeezed their sperm and sent it to the back.
