Naruto System in One Piece - Chapter 521

Climb the Tower.The path to power is ever growing, immeasurable. A peak above a peak, above a peak. There is always the next peak to look up to. A place where dragons eat dragons.In this world where a catastrophe known as “Global Awakening” gave humans different magical abilities to fight the dungeon and monsters that invade earth, Jael is among the weakest—one of the Half Awakened, struggling to survive through odd and humiliating jobs.However his dream of climbing the Dungeon Tower won't be forever buried because a WILL has been left behind. An intent put into a spellbook that's been waiting for just who to claim it.In this golden era of worlds, all eyes are on the Dungeon Tower, where everyone seeks to become its master. “What do you desire? Money and wealth? Honor and pride? Authority and power? Revenge? Do you want to reverse your failures? Or something beyond them all? Whatever you desire—it is here. If only you climb.”Follow Jael’s journey as he ascends the Dungeon Tower, determined to create a new legend for himself.

Nine Realms Sword Emperor, a legend returns, leveling everything.Genius monsters, trampled underfoot, powerful beings, wiped out with a wave of a hand.If people do not offend me, I will not offend them; if people do offend me, annihilate their entire family.

Satou Shiki a Japan present-day university student suddenly one day he got attacked by a slasher when he open his eyes he was already transferred to another world’s labyrinth city. In that another world he who was awakened to do a lot of “things”.

Super soldier Su Chen, returned to the city and returned to the city, set off all directions! The king of soldiers that once famous the world, let everyone be convinced!

- Description from xbiquge