For martial arts or skills that doesn't necessarily need someone to be extremely strong to be good at...
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•Starter
Beginner/Novice
intermediate
Professional :
Martial Master : for ex/ 7 swords of mist or people who mastered their respective martial arts or taijutsu
Great Martial Artist : for ex/ indra, ashura, madara, hashirama.
Martial God : the later stages of Monster Garou is here.
God: for ex/ Cosmic Garou or Saitama
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his Skills that has effects on his body permanently or even martial arts for example something like breathing techniques from demon slayer or Hamon that has permanent effects on his body, regeneration ... etc . the levels will be something simple like Romanian numbers as i don't want to complicate things too much .
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I
II
III
IV peak of what could possibly be achievable in human terms ( like Hashirama )
V: Beyond human ( like six path Madara and beyond )
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