Yuri, who still retains her innocence, is sold by her mother to work in an underground soapland. To make Yuri the store's mascot, the shop inserts a penis into her and trains her with internal ejaculation. The narrow vagina of the beautiful girl is desperately trying to expel the filthy adult-smelling semen poured deep inside, but it oozes out thickly... Caught between fear and pleasure, Yuri, who continues to have semen injected into her vagina, eventually falls into becoming a perverted soapland girl who begs for internal ejaculation.
