ROYD-366 The shut-in younger sister is a lonely NEET who gets carried away with pleasure! After discovering the joys of intimacy, we spent another day lost in quiet, secret lovemaking… Miyu Otori

My shut-in younger sister. To me, she was just part of the background. She always wore the same old T-shirt, worn thin from years of use. Baggy track pants. Tissues and a phone charger scattered across the floor. Her eyesight was bad, and she was terrible at talking to people. She never went outside, so of course she was unemployed, the kind of girl people would call a shut-in. We were siblings. So I never really had any interest in her.

Or so I thought.

That day, I opened my sister’s bedroom door for a quick errand. I didn’t knock. I never did. What I saw inside was shocking. My sister was biting down on her shirt and lifting her hips, looking desperate and overwhelmed. I had seen something I should never have seen. My mind went blank in an instant. What was most unsettling was her expression. Usually she just stared at her phone with dull, lifeless eyes, but now she looked like she was drifting far away, yet desperately trying to hold on.

My reason collapsed with a sound.So did every boundary I had as her brother.

By the time I realized it, I was already in the room, leaning over her. I held down her arms as she struggled and pulled her trembling body close. I didn’t even understand what I was doing. But I couldn’t stop anymore.

And then—her body, which I had thought had gone completely slack and lifeless, was unbelievably hot and wet. I lost myself and moved against her, again and again, going deeper and deeper without even noticing how far it had gone.

Please, stop… I’m already… the words seemed to come from far away. Again and again. Each time I pushed deeper, her fingers gripped the sheets. She let out a voice that wasn’t quite a voice, trembling softly once more. Even so, I still couldn’t stop…