Only Sense Online - Volume 10, Chapter 1 - Medium-Level Recipes and Unveiling

A boy from 21st century Earth, met an accident and later was reborn in Naruto’s Ninja World.
He is born in Uchiha Family and becomes the useless brother of Itachi Uchiha and Sasuke Uchiha…. Let’s see how he changed the Naruto world.

- Description from Novelupdates

Elias' world was destroyed right in front of his eyes. Only after his transmigration did he learn that there was nothing natural about its destruction.“Mother, I passed my Practical Exams! I was so lucky to get a weak world like Earth for my practicals! It only took a few months!”The person who destroyed his world was the eldest son of the family he was transmigrated to, the Ashborns.He could never forget his sister's cries when she suffered and eventually died from the virus that wreaked havoc in his world. And here he was, the person responsible, laughing.Elias wanted to repay the favor. He wanted to bring absolute ruination to these people. And for that, he had to play by their rules. He had to become the Architect of an Apocalypse…

Wu Yuan was reborn to the eighth or eighth year when the carpenter had just graduated from school.

The snobby wife who had only been with her for three months in her previous life was about to marry.

It is impossible for Wu Yuanduan to jump into the same fire pit twice.

It is impossible for him to take this hard-won chance of rebirth to cover that cold heart that does not belong to him.

With that skill, he could have picked a better one.

The beautiful daughter of the branch secretary’s family is not bad.

Although his family is bare.

Although he is alone.

But he has more than 30 years of experience and a carpenter’s skills.

So Wu Yuan’s rebirth began as a carpenter.

- Description from novelbuddy

With a sword in hand and wine in tow, he roams the martial world; her slender waist is light as a feather in his palm.The young man strides forward with a long blade slung over his shoulder and a flask at his side, yet the world of martial arts he seeks remains elusive.As the chaotic world book turns a new page, decades of relentless nights in the martial world pass by.Suddenly, he looks back and finds he has already shattered the mortal realm.