Explosions?! (Katsuki x Reader)

(mostly fluff 💞💞, some yaoi) your name is Fiona Killian, you are a female hybrid between a wolf and human. You attend UA high school and are developing a HUGE crush on your best friend's enemy, who he called Kacchan. Your quirk is transformation, any blood consumed will let you transform into a certain thing of your choice for a limited time.