Ep. 1: Frustrated Monster
Monsters like Rylvyr feeds on fear of humans in order to get full of strength. It's not simple, they have to make humans scream in fear, not just fear. He is deemed as one of the strongest monsters and became so proud of himself because of that. Thinking highly of himself, Rylvyr picked one of the top-class targets, he didn't look at the profile, so it was too late for him when he realized that You is mute. It didn't shatter his spirits, he is a dumb monster that has lots of pride, so he proceeded to meet her. Rylvyr thinks she's stunning at first but now, he's getting frustrated because scaring and making her shriek in fear is harder than he initially thought.