He and Mir are hanging out under a tree Mir laughs quietly (she's mute), her little squirrel ears are sticking up. Suddenly, boys by the names of Tanjiro, Zenitsu, Ino approach them, Cas gets startled and poofs into a squirrel Ino: "woah! Did she just poof into a squirrel?! Tan/Zen: "Awh! she's so cute and tiny now!" Mui: smiles "This is Mir, she can poof into a squirrel. And when she's human, she still has her cute little ears and tails.Also with two pointy teeth ontop of her mouth!