Ryoko Murakami is a genius female doctor who uses her voluptuous body to bring patients with erectile dysfunction to orgasm! Having trouble dealing with a man with anal ejaculation syndrome who was transferred from another hospital, Ryoko develops her own anus and, with the help of a female transsexual doctor, thoroughly treats his penis, which can only cum through anal! An extreme anal fuck 4P with three doctors and one patient! Ryoko, who has repeatedly squirted and climaxed from the unprecedented pleasure, can no longer withstand the pleasure of a three-hole simultaneous fuck in which her anus, pussy, and mouth are violated at the same time, and she reaches a convulsive climax!