Demons have rank up skills and stuff or whatnot, like that bone weapon (not super related to suggestion)
I think this idea is great, looks sick.
Hear me out for a second though:
In the show, you can choose what ore you want to use.
What if your choice of ore gave you a certain sword skill or something?
and no, NOT ❌ some stupid shit like +5% speed or something
a skill or ability thats special to that specific ore that has its own keybind
nothing crazy or powerful but maybe something useful in combat that can diversify the slayers a bit more.
food for thought