Fairy Kill

Have your guy's read or watched Akame ga kill?
If you guys have, Then you should know that Esdeath got her teigu by drinking the beasts blood. but what if there was another one? Another blood type weapon that was able to control fire.
We know Esdeath's power came from a beast in the far north, but we don't know the animal it came from.
So, for the beast to control flames came from the blood of a dragon. The king of dragon's.
The Fire Dragon King. Igneel.