3DSVR-1765 - VR, 8K, A story about a defenseless step-sister seducing with a revealing T-back, and engaging in sweaty, intense sexual activity during her brother's absence, leading to an adulterous lifestyle. Ozaki Erika.

I am a university student living at home. My brother got married, and I started living with my step-sister. Their relationship, which initially seemed smooth, gradually cooled down, becoming visibly sexless. Then, my brother went on a business trip for a while, leaving the house. I ended up living alone with my step-sister. Perhaps due to stress, my step-sister began to behave quite openly. Eventually, she started walking around the house wearing only a revealing T-back, exposing her buttocks. A step-sister with sexual frustration in a T-back, and me with a strong sexual desire. Naturally, we fell into an affair. Rubbing, licking, and ejaculating on the buttocks, being able to do it multiple times with a beautiful butt, being squeezed in a rear-facing position, a riding position, and a back piston.