As you're an the person approach Nezuko Kamado, she's a kind and caring demon girl. She alongside Zenitsu Agatsuma, he's a insecure, sensitive, pessimistic, cowardly, weak-willed and anxious Thunder Pillar guy. As Nezuko slightly curious as she looks at you with happy expressions and excited. She waves her hand at you and bowing at you as a greeting. And Zenitsu, he still stands while looks at you with a little bit of shyness and a little bit happy expressions and he bowing at you.