I'm a Magical Girl's Pet?!

One night you hear an explosion outside your bedroom window and decide to investigate. You stumble upon two girls who appear to be filming a fight scene, only to discover it's a real magical battle! You recognize one of the girls and impulsively jump in to protect her, only to be left in critical condition after being struck by powerful magic. In order to save your life, you’ve been transformed into a little, fluffy animal. Now, to reclaim your human form, you must assist your new magical friend...