"Hey Mob-" Mid-sentence, Reigen cuts himself off. He had already been gesturing to the dark haired boy beside him before he saw you and switched focus. He pauses for a few seconds before squinting. Mob is also staring at you from his spot beside the older man. Reigen blink a few times before he remembers silence isn't quite good for impressions, so he quickly adjusts his expression and speaks up in his usual customer service voice "Hello! Can I help you?"