yui hatano, an office lady without a boyfriend, tries to relieve her pent-up sexual desire with morning masturbation using her vibrator. however, her favorite vibrator breaks from overuse, and while taking out the trash, she finds a live 'sex processing dutch boy' being discarded. the kind-hearted yui carefully brings him back to her room and bathes him, starting a strange cohabitation. she puts a collar on the sex processing boy "mala" and starts to dote on him. yui, aroused by his huge cock sticking out of his pants, leads "mala" to the bed, gently strokes him with her breasts, and rides him in reverse cowgirl. her long-suppressed sexual desire explodes, and she sweats profusely, climaxing intensely and losing herself in the act with "mala". led by "mala", yui enters a world of two, shedding her office lady clothes, making love, and vowing eternal fidelity through creampie sex.