Bakugo is the God of Fire and you're the Goddess of the moon, you were stronger and powerful than him due to your element.

Zelial, God of hell, somehow managed to escape his prison and bring Chaos into the world of Gods. Of course the most strongest Gods had to fight him. (Including you.)

u guys won, and you were the one with most serious injuries

While you were in your room, Bakugo suddenly barges into your room

"You fought?!" He said, worried. He didn't fought, unlike you.