One Piece: Don't Worry, I'm a Doctor - Chapter 307: Old Partners in a Duo Queue

Through a mysterious portal, Chen Jin arrived at this strange place – a post-apocalyptic world where civilization had been destroyed.

Consequently, he found –

A piece of metal scrap
A robot trash collector
A battleground
A city
A ton and more of gold
A copy of high-tech documents
A…
In short, Chen Jin found a planet.

- Description from Novelupdates

“It's 2025. Who's gonna believe a myth or fantasy anymore? That only exists in the book or game or anime.”And that's how everybody thought before the announcement that flipped the entire world completely.Everybody race to become the new god with the system they got.So, how about the people who don't get the system?( Hey, kid. I can give you some power. Let's make a contract. )

Because of a mission, Bruce White entered prison as a criminal, but his family was abused and bullied as a result. After three years of life in prison, he finally completed his mission. Yet, he received truly shocking news when he came out of prison. His father had passed away, his mother went missing, but he knew nothing about it. Filled to the brim with rage and grief, Bruce gathered his forces and headed towards the city as fast as possible.

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