Miyu, a beautiful woman who arrives at the hospital, finds herself subjected to unexpected medical procedures. The doctors are rumored to have an intense obsession with the anus, engaging in extremely excessive acts. Unaware of the truth, Miyu undergoes an examination and ultimately ends up in an intensely lewd situation. Her anus, stretched open with medical instruments, gradually awakens to pleasure. Under the hands of the perverted doctors, Miyu experiences ecstasy through both her vagina and anus, even resorting to double penetration masturbation. This exquisite sensation leads her into uncharted territory of arousal.