The war against Cursed Spirits demands an absolute solution. For centuries, Jujutsu society offered two brutal paths: massacre the masses, or forcibly elevate every human to sorcery. But now, a third, terrifying answer has returned from the Heian Golden Age.
It is the ideology of the Sage of Curses, the ancient rival who once fought the King of Curses to a standstill. Using the power of the Nine-Magatama Rinnegan, the Sage has returned with a final plan: to plunge all of humanity into the illusion of Infinite Nirvana, ending all negative emotion and permanently severing the source of all Cursed Energy, will the Sage of Curses finally succeed in bringing his final, terrible peace to the world?
(the MC isn't reincarnated or reborn)

Chapter 5 has been uploaded on another novel "Re: JJK: Infinite Nirvana" 


Chapter 5 - announcement