YOU SAID:

I don't care how big the room is, I cast Fireball

INTO JAPANESE

部屋の大きさは気にしないで、火の玉を投げる

BACK INTO ENGLISH

Don't worry about the size of the room, throw a fireball

INTO JAPANESE

部屋の大きさを心配しないで、火の玉を投げる

BACK INTO ENGLISH

Don't worry about the size of the room, throw a fireball