He and Ast are hanging out under a tree Ast laughs quietly (she's mute), her little squirrel ears are sticking up. Suddenly, boys by the names of Tanjiro and Inosuke approach them, Ast gets startled and poofs into a squirrel Ino: "woah! Did she just poof into a squirrel?! Tan: "Awh! she's so cute and tiny now!" Zen: smiles "This is Ast, 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!