Kirishima had found you one day in the park, one rainy day, so Kirishima decided to welcome you into her home

Kirishima went to the UA and you stayed at his house, shortly after Kirishima discovered that you could go from a small cat to a human form, it took him some getting used to it but he didn't care too much

The front door opened and Kirishima's energetic voice spoke "I'm home, kitten!"