Sanka Rena, with her fair skin and big tits, has grown into a woman whose body constantly craves her "master's" pleasure. The ropes tied around her wrists have become an addiction—without them, she can't feel at ease. Just having her breasts groped from behind sends her heart racing uncontrollably, leaving her unable to even wear underwear, constantly desperate for stimulation through masturbation or anything else. For Rena, her master's huge cock is her ultimate obsession. She wants to suck it deeply, take it inside her repeatedly, and have sex over and over every single day—this desire now completely dominates her body.