Naruto: Konoha's Kanpu - Chapter 864: Jonin Instructor Candidates

She fought in the Battle of Changping and witnessed the killing of hundreds of thousands. She once led the Qin Iron Calvary and battled against the Six Kingdoms. She has seen a third of the land and witnessed the breaking of mountains and rivers. The sound of a grand zither and the light of a great female emperor. A prosperous world that was forged on the battlefield. Yet, these two thousand years are forgotten from history.

- Description from Novelupdates

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

- Description from Novelupdates

At the genesis of the world, the ‘Dark God Entropy’ was defeated in the fight between the five other Gods, and was sealed.

One day, a Tower appeared, and with it a proclamation by God that Humanity is to be judged for becoming too corrupt.Regression…It’s an ability so fraudulent that it doesn’t require any detailed explanation.Yes, I also agree that it is a fraudulent ability, but…Isn’t it too much to regress due to just a slightest injury…?