Tenebroum - Chapter 13: Heroes All

A normal high school boy with nothing much happening in his life except for...life. Every new day was the same as the one before but he doesn't really care much about it. He thought of himself as a normal high school-going boy with no clear future. Lazy, sarcastic, but kind of intelligent, he was living a normal life.Though fate had different plans for him as he met a girl who he did and did not know. The school princess was the first thing he saw when he woke up in his bed caressing his head. To any other boy in his situation, it would be pure bliss but he was worried.Why?Since she was in his house which he had locked before going to sleep. Little did he know that the girl was more than what she showed and was about to turn his entire life upside down. How will he tackle this situation? No one knows that.

The village girl who was close to death from illness was about to marry, and her suitor was a strong and hearty hunter.Having time-traveled to a poor and backward mountain village, she had resigned herself to the lack of three square meals a day, but was her new body already halfway into the grave? What's more curious was that someone still wanted to marry her despite being on her deathbed?Driven by curiosity, she went ahead with the marriage, eager to see who the unlucky sap was who'd lose his betrothal gifts and even the coffin money.Cradled in his arms, her body was thin as a rake, and she really wanted to ask him, “Husband, does holding me hurt your hands?”

Reborn in the Naruto world, Shin Uzumaki finds himself in the doomed Land of Whirlpools. As a member of the Uzumaki Clan! Trapped in a world filled with war, betrayal, and unimaginable power, Shin’s survival seems impossible.. Until it isn’t!![Ding! Replication System Activated!][Daily Login Reward: Common Replication Card.]​​​​​​​[Newbie Gift: Perfect Sage Body—​​​​​​​Adamantine Sealing Chains​​​​​​​—​​​​​​​​​​​​​​Four Symbols Seal​​​​​​​]With the power to Copy any Ability—whether it’s the Kekkei Genkai or Rinnegan or Forbidden jutsu—Shin begins his journey to dominate the Ninja World. [First task: Save Kushina and prevent the destruction of the Uzumaki Clan.]

The youngest Wiseman of the continent, Chu Tian, has traveled 30,000 years back in time to the age of antiquity due to an accident.

This is a prosperous era. Rare herbs, minerals, treasure relics and monsters can be easily found throughout the land.

However, this is also an undeveloped era. Communications, traffic, martial arts and technology are in its early stage of development. Prosperous cities lack lighting while its citizens are uneducated.

Our decisive MC using his future knowledge creates Magic powered light bulbs, magic powered telephones, magic powered cannons, magic powered computers, artificial intelligence, psyche internet. 30,000 years worth of knowledge allows him to create miracles and shine brightly in this era. Allowing him to conquer the land and sit firmly on the throne of the 10 realms.

- Description from Novelupdates