🟢 Level 1 – Easy
Monkey D. Luffy
To become the Hokage.
Akaza
Zangetsu
Goku (depending on the point in the story, Vegeta is also a contender).
Gomu Gomu no Mi (Hito Hito no Mi, Model: Nika).
Satoru Gojo
Death Note
🟡 Level 2 – Medium
Indra Ōtsutsuki (one of the earliest known users).
Unlimited Void
Sakonji Urokodaki
Kuina
Sung Jinwoo
Kyoka Suigetsu
Orochimaru
🔴 Level 3 – Hard
Perfect Susanoo
Shrine
Nana Shimura
Pluton
Kokushibo
⚫ Level 4 – Expert
Flying Thunder God Technique (Hiraishin no Jutsu)
The original Soul King was born with his powers; he wasn't created by someone.
Sung Il-Hwan
Ymir Fritz
Onigashima (in Wano Country)