FSDSS-218 — My Unsuspecting Brother's Girlfriend Moved Into My Apartment Where I Live Alone And We Lived Together For Three Days - Yume Nikaido

Friday at 6pm. A pleasant voice suddenly rings on the intercom. My brother's girlfriend Yume-san and I are having a moment of peace after studying for my exams. Our time together passes, but my brother, who was supposed to come later, doesn't show up even when night falls. Yume-san forcefully begs me to insert myself into her, leaving me confused...