Rin burns lungs

"Rin screamed. A rivulet of fire shot from her mouth and slammed into Augus's chest, knocking him over. He shouted, writhing madly to put out the flame, but the fire didn't stop; it consumed his air, poured into his lungs, seized him from the inside like a hand until his torso was charcoal and he couldn't scream anymore"

The Dragon Republic, Page 441