A widow who cannot forget the "bondage" of her late husband, she masturbates by binding herself in ropes. Although she reaches climax as the hemp ropes dig into her pussy, Saki feels an empty void in her heart. She decides to visit Doyama, the master who taught her late husband the art of bondage. The tighter the ropes dig into her body, the more vividly her memories of her husband return... Bound by Doyama, Saki becomes "rope-drunk" and is trained as a bitch in a collar, completely naked. In place of her late husband, a young man, a disciple of Doyama, volunteers to bind her. Bound by a man younger than herself, Saki is embarrassed by her exposed state, but her masochistic blood boils, and she becomes a complete bitch, shaking her hips. Her H-cup huge boobs burst out from the bondage ropes, and the moment she takes an erect cock in her mouth, it is slammed deep into her throat. With her womb aching, Saki opens her legs and moans through the torture of being pounded deep in her pussy while being choked or having her breath sealed. In the cowgirl position, her hips are grabbed and ground relentlessly, leaving her in a broken state of constant spasms. Her raw pussy is stained with white cum, and she shows an expression of ecstasy. Bound tightly all over her body, Saki fights against the approaching orgasm. Her entire body becomes an erogenous zone, and she feels as if she is about to cum... When her wide-open, congested pussy is sucked noisily, she screams in pleasure, and a brief silence follows as her consciousness fades. Eventually, squirt juices gush out from her pussy with a vulgar sound, and Saki, nearly driven mad by pleasure, clings to a new man's big cock and won't let go. After climaxing multiple times with a big cock twisted deep into her vagina, Saki becomes absent-minded and motionless, like a doll...!!