No, I don't think so. I doubt these things were people.

[He heads out the door, careful not to get any embers on him, and looks at Dabi's demon carefully. There's not a lot of wiggle room to get a weapon under there. He could try elemental spells, but he's not sure he has anything strong enough to destroy it.]

[Any big spells he has would hit Dabi, too. So he has to use a sword to get it. If only he could cover him from... injury... oh.]

I've got an idea.

[He pulls out a small crystal and holds it for a moment, his attire changing in a flash.]

I can slice it off like this... and make sure you don't take any damage.

[Provided Cover works and the demon doesn't just transfer damage through some means that can break through it.]