The nymphomaniac Yui Shinkawa seduces men with her erotic lingerie, milking their semen until their desires are satisfied. This naughty big sister, who relentlessly teases the nipples of her M-boy, straddles his face and penis, transforming into a lewd creature. Even with kisses, the way she entwines her tongue is incredibly erotic. When being teased herself, she never lets go of the M-boy's nipples. Despite being impregnated once, she is not satisfied and continues to tease the man's nipples, inducing an erection! Then, in a frenzy, she continues to ride his penis in the cowgirl position, culminating in intense sex, leading to a second impregnation! A must-see for fans of nymphomaniacs!