So jinx is a demon weapon. Basically a human that has the ability to turn into (the individual can only turn into one specific weapon) a traditional weapon, like a gun or a scythe. They are known as a kishin which is what is made when a weapon is over fed with an enormous amount of good human souls instead of kishin egg souls and kishins are extremely strong the only other one in existence was so strong that not even death could kill him. He had to be sealed in a bag of his own skin and have all of his blood drained. That’s not what happened with Jinx though he was turned into a kishin recently and has been experimenting with the madness that comes with being a kishin.
