The rotoscope animation doesn't feel like a gimmick, it's the only way to show what makes Anzu real to Karin, every tired slouch and reluctant smile captured with the weight of someone learning to care again. A kid abandoned by her father and a layabout spirit-cat sidestepping their obvious need for each other creates a tenderness that doesn't announce itself. The film knows that love sometimes looks like failing at odd jobs together, and sometimes that's enough.
Karin arrives at her grandfather's rural temple with nothing but resentment and a suitcase. Her father's abandoned her here, and she's determined to make everyone regret it. Enter Anzu: a massive supernatural cat with the work ethic of a house plant, somehow assigned as Karin's caretaker. The kid immediately starts sabotaging Anzu's attempts to earn money doing odd jobs around town, convinced this lazy spirit is the worst guardian possible. Instead of moping, Karin befriends the local forest spirits, a collection of oddball creatures with their own agendas. When Anzu realizes she's losing the girl completely, desperation kicks in. An ill-advised deal with literal Hell seems like a solution at the time. It isn't. As chaos erupts and the devil comes calling, Karin and Anzu finally realize they're stuck with each other, and maybe that's exactly what they both needed. What starts as a story about abandonment becomes one about unlikely bonds, mischievous spirits, and learning to belong somewhere.