All Healed Up

"I don't think it will work though… my twin spirit moth can only affect the spirit with its energies and skills. Not the physical body." Maria's worried voice was enough to stop herself from moving forward. 

"No, you are right, but you are also wrong. Just because that will not cause damage, it will still be heat from fire. There are plenty of beasts like the spirit flame fox that are immune to attacks unless they are water energy attacks and also can not harm people unless attacking their natural spiritual energy."

"They are rare for those traits, but they are also useful for this reason. Many illnesses require the body to become hotter to push those illnesses out. But, when using fire and other methods, there are burns. That happened to grace. So, with your partner, it's possible to avoid burns while also removing this monster."