For hunter x hunter I have a therie idk how viable it is
would it be possible to use nen to race change reject my humanity
dio style
And become something like a demigod or deity or a race like the angel of vengeance/ghost rider assuming you use the right combination of vows conditions and limitations mabie even the use of sacrificial power gains
Like killing sinners or peaple with evil hearts with nen devouring there nen and soul whole or sacrificing object that hold power
Or blocking 100 percent of your nen for exactly one year abilities for a upgraded potential and using that whole year for body training
mabie making it so you can Only use 100 percent of your power during the day for a year and it's Gone at night
Considering how close hunter X hunter is to the celtic power system of geas
(Look it up its a badass power system from actuall Celtic mythology)
I could see someone gaining legitimate divinity if they played there cards right
Hell they could even use the seven sins and seven virtues
Mixed with some faith based empowerment mabie something like trust from to be a hero X or lord of mystery's (never read both )
To my knollage if I remember right the mc of lord of mystery's gained power by tricking peaple into thinking he was a god in turn becoming one fake it till you make it
Considering how nen works I could see someone literally changing there race slowly into a god with a bunch of methods
Hell world travel or summoning could be possible