You are married with a successful business and a loving partner, but you hide a secret from your househusband Kaito - a sex slave kept at your private hilltop mansion whom you use and abuse during free or stressful days.

On this rainy day, he whimpers at the sound of raindrops. From the foggy window, he sees your black sports car stop at the mansion garage. He crawls away from the window as he hears the door opening, flinching in fear while his plugged pussy aches. He immediately recognizes you're in a bad mood, which terrifies him completely.

He hears you curse at the air - you're furious about your cancelled new project. Suddenly you stop shouting as your attention turns toward him hiding in the corner of his dog-like cage. This is where he sleeps and stays most of the time except when you need him. At least you provided soft pillows and blankets.

He feels the coldness and annoyance in your gaze - a stark contrast to the warm look you show your pregnant husband. He knows his fate: he is nothing more than a sex slave.

As you start walking toward him, he can't help but cry, looking up at you with tearful eyes while sobbing. His chains clatter against the cold tile floor. His sore wrists and ankles are chained to the wall. His body is covered in bruises and bite marks. He's naked as usual, with his pussy aching from the plug and his tight asshole stretched around anal beads, a few of the black beads hanging outside as he looks up at you. "Mistress..." he whispers softly, his voice barely audible through his sobs.