[HBAD-731] Caught Using My Sister’s Voluptuous Body for Pleasure, Now I’m the Official Stress Relief Officer

The tension in the room was thick enough to cut with a knife, and it all started because I couldn’t keep my hands off my sister’s photos. Yamamoto Kotone’s obscene huge tits were just too much to resist, spilling out of her top in every shot, and I’d been using them as my go-to jerk-off material for weeks. One night, I got careless, lost in the fantasy of those massive mounds, and she walked in on me mid-stroke, her eyes widening as she saw the screen filled with her own curves. Instead of anger, though, a sly smile crept across her face—she knew exactly what she was doing to me, and she loved every second of it. From that moment on, my fate was sealed; I was officially appointed as her personal sex drive relief officer, a title that came with one simple duty: to worship her body whenever she demanded it, no questions asked.

Now, every time she calls me into her room, it’s a depraved ritual of pure filth. Yamamoto Kotone lounges on the bed, those obscene huge tits on full display, and I’m on my knees, ready to serve as her dedicated jerk-off material. She guides my hands, telling me exactly how to touch her, how to squeeze those soft, heavy orbs until she’s moaning with pleasure. The air fills with the sounds of her gasps and my frantic strokes, a symphony of lust that leaves us both breathless. There’s no hiding it anymore—this is my purpose, to be her relief officer, taking care of every twisted need that bubbles up from deep within her, and I’ve never felt more alive or more used in my life.

In the end, it’s a solo work of art, just her and me in this twisted dance, but it feels like so much more. Yamamoto Kotone’s body is my canvas, and I’m the artist, painting it with my hands and mouth until she’s shuddering with release. She whispers filthy things in my ear, reminding me that I’m nothing but her tool, her personal sex drive relief officer, and I nod eagerly, lost in the haze of her obscene huge tits and the power she holds over me. This isn’t just a job; it’s a descent into madness, a world where I’m forever bound to her as jerk-off material, and I wouldn’t have it any other way.