It Seems That I've Slipped Into a Different World. Also, My Gender Has Changed. - Chapter 5: Leisurely Bathing, in a Giagantic Bath

A con-man and policewoman that are legends of their respective professions suddenly die, then are reincarnated and return to the Tang Dynasty of ancient China as little kids.

Accepting their second chance and forced restart, they choose to use the modern knowledge and specific talents that they have in their previous lives in order to live comfortably in this new life.

- Description from Novelupdates

After crossing, I also got the superhuman… twisted fruit.

This devil fruit was brought into full play by him.

Distort gravity, distort space, distort time.

Fight for hegemony in the new world and become the new emperor.

The top war choice is to completely evolve this epic battle into his stage.

Luo Chen declared to the world:

My time has come! !

- Description from novelbuddy

Xiao Luo and his girlfriend had been in love with each other for four years when she proposed a break up. Because of this, Xiao Luo sped his car in the night and ended up in a car accident. But it was a blessing in disguise as he unexpectedly fused with a high tech system that originated from a universe hundreds of billions of light years away. From this moment on, the entire world started to run amok.....

Meet Gu Yu—a college dropout and a talented incense maker, and at the same time, the rather stoic protagonist of this story. Despite his somewhat introverted manner, he has a tendency to make sarcastic remarks in his thoughts. One day, after saving a squirrel, a windfall (metaphorically and literally) dropped into his lap. Stumbling into the cultivation world with little help, he was not turned into Superman overnight (as he would like). Apparently, becoming a cultivator would not make your life easier, at least in the beginning.