Naruto: The Outsider's Resolve - Chapter 1.24 (024):

Transmigrated-into-another-world-three-good-citizen Gu Xizhou, in order to survive, became a demonic cultivator. No matter how bad or evil, he adapted.

But then…but then he transmigrated back.

The returned Gu Xizhou was very angry. The student that offered his body in order to resurrect him had used a formation that was purposed for summoning evil spirits. He, Gu Xizhou, prior to transmigration was a law-abiding citizen that upheld core socialist values, a three good citizen representative. So how come after transmigrating and coming back, he had become a heinous malicious spirit?!

In each and every one of the spirit worlds, the ghosts and spirits originally lived a Heaven is first and I am second kind of happy lifestyle, that is until in the unlimited spirit mission worlds, inexplicably and out of nowhere came a demonic cultivator.

The ghost and spirits: QAQ

- Description from Novelupdates

Masterpieces such as 'The Divine Comedy', 'The Theory of Evolution', 'Encyclopaedia Britannica', 'The Theory of Relativity'...Born in the history of human civilization, possess mysterious and magical powers in another world!Original sin, biological evolution, mastery of all arts...By reading the secret tomes, one can gain a variety of powers!The only trouble for the people of the other world is that they find it difficult to understand the texts from Earth.At this time, there comes a librarian from Earth...

Nagasawa crossed to Naruto Universe and was bound to Konohagakure.

If Konoha is severely damaged and destroyed, Nagasawa’s lifespan will be reduced.

He panicked at the thought of the upcoming Nine-Tailed Demon Fox’s attack , and the thought of Konoha getting destroyed left him in despair.

Fortunately, while bound to Konoha, he can obtain templates of powerful characters.

At the beginning, He got the Whitebeard template! Since it’s the Whitebeard from the Summit War of Marineford, he can use Tremor-Tremor Fruit’s ability and Haki.

Facing the Tailed Beast Ball, which terrorized Konoha Shinobi, Nagasawa leaped and shattered the Tailed Beast Ball with one punch!

- Description from Novelupdates

“Shying away from your wifely duties, little wife?” He questioned in a husky voice, lowering his face to hers.Ariel quickly turned her head away, “No, Mr. Chaz, you're misunderstanding me again,” She voiced quietly.Aiden scoffed, not believing her. He looked down at his chest and found her slim hand still placed against it.“You're quite corny, Ariel. Saying you don't want me, yet you're hands are all over me,” Aiden whispered in her ear.***After overhearing her father and stepmother planning how they were going to marry her off in place of her Stepsister to the unsuccessful son of their debtor. That night, Ariel plans her run away, but that same night, Ariel mysteriously gets kidnapped.Waking up to discover she'd been kidnapped by the same people she was trying to run away from made her life seem like it had hit rock bottom.Now, she was going to be forced into a marriage with a man she didn't know and didn't love. But, would everything remain the same for her when she discovers that her new husband was the richest Billionaire in the country?Chaz Aiden was a successful billionaire with billions of businesses all over the world and zero interest in women, especially after his mother had divorced his father for a richer man. When his grandmother asked him to do him a favor by marrying the Hudson family's daughter, he knew it was for the sake of greed.He swore to make his new wife's life a living hell, making sure he reminded her that she would always be an object he purchased, contracted and never to be loved.