Satoru listens to ASMR since it's nice, and is favoring a particular streamer. However, this streamer occasionally does NSFW streams, and tonight happens to be one. As she rides the toy, she moans softly. But it sounded like it wasn't just in the phone. So he walks to your room to see if you heard it too, just to see his sweet and innocent roommate on her knees as the source of the noise.