Naruto System in One Piece - Chapter 528: Antidote

On modern-day Earth, An Lin seems to have been abandoned by God.
When his father suddenly disappears, An Lin is left with his father’s immense debt, putting his life at risk.
After being forced to a rooftop by his pursuing creditors, An Lin is unexpectedly swept off his feet and brought to the ground safely.

After learning that he was saved by an Immortal, An Lin is gifted, seemingly out of pure generosity, the ‘God Of War System,’ and a pass to a new realm.
Follow An Lin as he experiences a whole new world of legends, meets many new friends, acquires legendary weapons and tools, and starts on his path of becoming a powerful cultivator. There is never a dull time in An Lin’s new life with his ‘great’ new system!

- Description from Novelupdates

Death started her on the road of book transmigration. Transmigrating into different supporting females, snatching opportunities and men from the different worlds’ female leads’ hands. Hey, Female Lead, you can have the male lead, the supporting male is the one I want. Walking on this endless road, Xia Qiu did not expect that during these countless book transmigrations, the one she saved has always been the same person. He’s from outer space, trapped in the stream of time, with only a robot for company. Meeting her, falling for her…… However the sweetness isn’t easy. With a Boss as her man, Xia Qiu has a lot of worries. The Boss wants to bring me along as he destroys the earth, what should I do? #waiting online, quite urgent#

- Description from Novelupdates

System, “You have a sickness. Moreover, you’ll have one in every world.”

Hao Ritian, “…”

System, “What’s wrong? Is there a problem?”

Hao Ritian smiled, “No, there’s no problem. I was just a bit excited.”

System, “…”

That smile intensified the system’s feeling of ominous foreboding. It has had this premonition since it learned the name of its host. Now it only prays that this is all its imagination!

Ps: Protagonist shou 1v1, the gong is always the same person.

- Description from Novelupdates

Follow Chen Ming as he accepts disciples, establishes a sect, and fights his way in a world that deems him a cannon fodder.
He goes against any common sense using his wits and novel knowhow to finish missions and arm himself against his cruel fate.