Marvel: I'm a Symbiote - Symbiote 0298: Restraint?

Su Yun was a prodigy, blessed by the gods. However, life is never so easy. Soon after reaching 6th stage in spirit novice realm cultivation, his progress stagnated due to incurring a rare medical condition.

Kyo Mazuru traveled to the world of Bleach and landed in the forest of Menos Grande at the beginning.Picking up a asauchi left over from Shinigami's death, and starting with a sword, he spent hundred years in the forest of Menos Grande to survive, slashing countless hollows, and his slashing skills reached the peak, until one day, he met a man who claimed to be Mr. Aizen Sōsuke!Mr. Aizen couldn't bear him to live alone in Hueco Mundo, so he invited him out of there and brought him to Soul Society!After that, Kyo Mazuru's Shinigami career began!

[Climb the Dimensional Tower and have any wish fulfilled by the gods themselves!]

Enters Josh Malum.

He was feared on Earth, but in this new world, he is but a Fallen. One that is forced to Climb. If it wasn’t bad enough already he is also Classless, something that is unheard of in the Tower. Yet none of it phases him.

«You think I should be despairing? Why? Is it because I’m classless? They offered me so many classes, I simply refused them all.»

Sacrificing the many worlds is a small price to regain what he once lost. To all the deities that stand in his way:

F… ⎧ᴿᴵᴾ⎫

A college student, accidentally reborn into the world of Naruto, becomes a member of Uchiha who is destined to be exterminated.

In this cruel ninja world, in the face of endless wars and exclusion from the village, what will Uchiha Qing do?

PS: Later in the book, the protagonist will develop a system of immortal cultivation. Cultivating Immortals in the Ninja World, have you seen it?

- Description from novelbuddy