Infernalmancy
Of course, I actually went to make sure the demon was dead by having my summons stab it a few more times.
Since it didn't move, I'm pretty sure it's dead.
That meant I could now check on the others.
I rushed to Katsuki's side who was still breathing but unconscious.
Breathing out a sigh of relief, I resumed digging through my Pack of Folding to look for the potions I needed..
First thing I did was pour an Intermediate grade potion on Katsuki's back, watching as the potion took effect and healed the wounds on her back.
It was quite a wonder to see her skin knit itself back to health, not even leaving a scar behind.
I then took out a mana potion and downed its contents, restoring a portion of my mana just in case I need to cast any spells.
Next, I prepared another Intermediate grade healing potion for myself before letting my wings appear on my back.