Yuika, a sex doll with a shaved pussy, writhes in pleasure as she indulges in relentless self-pleasure with a vibrator, completely obsessed with her own ecstasy. With the day of her transfer to a new owner rapidly approaching, she fails to stop her masturbation and is forced into further training. Her re-education begins with a massive cock, as she's made to deepthroat until the thick dick thrusts into the back of her throat, followed by forced swallowing of the creampie load, instilling the fundamentals of a proper sex doll. With her legs spread in a tight M-shape and limbs bound, Yuika is left fully exposed as a huge, fist-sized cock relentlessly pounds her tight slit, making her tremble in overwhelming pleasure. As a final preparation before being handed over, she's intensely trained with repeated creampie after creampie, her insides soaked and reamed by the thick cock until she's completely drained, savoring every last moment of bittersweet sex with her current master. Once adored in cute lingerie, Yuika is suddenly exposed to the lustful desires of strange men who greedily lick every inch of her body, driving her into wild arousal. Impaled by her new owner's rock-hard cock, her vaginal walls ruthlessly stretched and stimulated, her legs shake uncontrollably as she's drenched in a massive cumshot, climaxing madly in the blissful fulfillment of her role as a sex doll.