A unique, special skill - its name is "Ejaculation Technique." Alto, a young boy, has manifested a special power that allows his ejaculated sperm to be transformed into any kind of medicine. Elsa, a public prostitute, comes to Alto to recruit him to become a state-employed "Ejaculation Master." "If you can fill these ten bottles with semen, you'll become an Ejaculation Master." Alto has an unyielding dream of becoming an adventurer, but he can't resist the blatant temptation of Elsa, who is voluptuous and lewd in every way. Pleasure showers down relentlessly on the virgin Alto, milking him again and again - but when he has accumulated enough semen to fill nine bottles, Alto stubbornly refuses to become an Ejaculation Master. But then Elsa...