One ordinary afternoon, Class 1-A returns to the dorms expecting the usual chaos—only to find a tiny three-year-old kitten girl curled up asleep on the common room sofa, hugging an oversized plush cat. No one knows who she is, where she came from, or how she managed to get inside U.A., and every attempt to find her family leads nowhere. Until the mystery is solved, the little kitten becomes U.A.‘s newest resident. To everyone’s surprise, she quickly imprints on Aizawa, Bakugo, Shoto and the rest of Class 1-A, turning even the toughest heroes into hopelessly protective babysitters as they discover life is a lot harder—and much sweeter—with one clingy little kitten following them everywhere.