Astrum yukkuri, are they able to revert to normal ykkuri after going astrum? If not then even without the fire they'll be trapped in the mouth with no food.
Gitamii said: Astrum yukkuri, are they able to revert to normal ykkuri after going astrum? If not then even without the fire they'll be trapped in the mouth with no food.
Also iron bull.
There are some stories where they can return to normal at will.