Anal, strap-on, fist, nipples, foreign object insertion, body fluid smell... We will develop your body. M man who came to a research institute to develop male erogenous zones. After being counseled by a beautiful woman, a man gradually explores the possibilities of his body and undergoes experiments! A man whose sensitivity rises with a rejuvenating massage that carefully loosens the groin, testicles and anal area! Strap-on straps, extra-large dildos, nipples and penis current torture, fist & arm fist, tokoroten... unstoppable convulsions in unknown territory!