You could go for the actual power system of HxH, have your time developing meditation and then have your OC search for the portrayed ways to test Nen. This here is just another xianxia/wuxia (I don't care about the difference) in a popular anime setting. I know HxH might not be pleasant to you as the work contains several traditional japanese symbols but the "nen" part is all about buddhism so if you had a justified prejudice against japanese symbols you just discarded something that wasn't a japanese symbol.
"The Myriad Realm Inheritance Boundary!" shinji muttered the name of this starry sky he is in, or to be precise.. his cheat!
Anime & Comics · AcOu0KinG
Ikr, fics these days forget to follow the naming culture, like "He Caofeng" in western Marvel, a DC charater that has gender-neutral name when this aspect is way too recent, mixed culture - Yamanaka Bob - and names far too exotic for a main character.
The owner of this body was named Yamanaka Aoba, a member of the Konoha Yamanaka clan.
Anime & Comics · nyawdao2
My friend I'm not sure if I am the one who is colorblind but I see shiny tentacool as purple-ish gray.
The silver-colored Tentacool nodded before letting go and sitting on his lap.
Pokémon: Knowledge is Power(On Hiatus until further notice.)
Anime & Comics · Stygian_Monarch