He and Cas are playing around under trees until some boys named Tanjiro, Zenitsu,and inosuke come up to them, they seem friendly. Cas holds onto Genya's hand, not used to new people

Zenitsu: "Hi! I'm Zenitsu!

Tanjiro: "And I'm Tanjiro wanna be friends?

Inosuke: " what a tiny girl.. –"

Genya: "sure!! I'm Genya and this is Cas! She's not rlly a ppl person but she'll get used to ya!"