Jujutsu: My Shadow Technique Reaches Across the Heavens

Reborn into the world of Jujutsu Kaisen as a member of the Zenin Clan, Youyun awakens a mutated Ten Shadows Technique. Because he is unable to summon shikigami, his clan sentences him to death at the age of sixteen.

At the critical moment of his execution, Youyun uses a binding vow to expand his mutated Ten Shadows Technique, gaining a new ability that lets his soul and consciousness transmigrate into people in other worlds. This lets him escape death.

With his expanded Ten Shadows Technique, Youyun can transmigrate his soul and consciousness into people in other worlds and awaken new techniques. Once he fulfills the conditions for returning, his soul can return to his original body in the world of Jujutsu Kaisen. The people he possessed then become his clones, and their projections can be summoned by Youyun as shikigami.

In the world of Demon Slayer, one of Youyun's shikigami clones awakens a power-based superconducting technique.

Baki!

Naruto!

One Piece!

Bleach!

Youyun transmigrates between world after world, gaining powerful shikigami clones with all kinds of techniques.

Years later, facing Satoru Gojo, who says, “I’ll win,” and the King of Curses, Ryomen Sukuna, whose strength is all on borrowed time, Youyun is surrounded by shikigami clones from countless worlds: one pilots a Gundam, one unleashes Conqueror’s Haki without restraint, and another stands in the sky, slicking back his hair with one hand.

Looking down at Satoru Gojo and Sukuna, Youyun says calmly, “Which of you will challenge me first, or… will you both come at once?”

PS: This is a multiverse-hopping story. The main world for now is Jujutsu Kaisen. Youyun transmigrates to other worlds to gain shikigami clones, with the ultimate goal of sweeping aside the two generations of strongest sorcerers in the Jujutsu Kaisen world.