@Xiro ZeanNOOOOO! He will not allow for their friendship to be toiled with by Ai lol. Honestly though, he wouldn't blame her as he's quite accustomed to others distancing themselves from him.
In all seriousness, I could see them having a relationship like Kenpachi and Yachiro, the rather large, menacing, voilent type x tiny, kawaii, unsuspecting badass. It'd be interesting because she is LITERALLY the complete polar opposite of Krit. He would be ready to kill with really no justification and she'd give him the scoldy face. He'd be like "....but! but!....ugh fine". It'd be kind of comedic watching this tiny girl keep him in check.
Who doesn't hate crits, unless you're the one dealing the damage haha xD Also, yeah I'm still working out his endgame form, but it will definitely be deadly (hehe)
Edit:
Thought about it, our characters are quite literally heaven and hell brought to earth.
Interesting...
@Sarcelle RenardI haven't worked out the exact numbers yet, but I imagine it to be something like mana in a video game. He'll start off to "x" number of life-energy. Each day that passes without him absorbing souls and using abilities will cost "x" amount of life-energy