Sukuna is the most powerful sorcerer ever, and he was even worshiped in the Heian Era. What exactly did he do back then?

Sukuna possesses the power to fully restore his original form and abilities through reincarnation ... to completely reincarnate into his powerful Heian-era body. This not only healed all of ...

He resorted to using Megumi's body first, as he knew that he could not simply rely on his Heian Era form and Malevolent Shrine. Banking everything on his Domain would have limited Sukuna's options ...