Naruto: The Outsider's Resolve - Chapter 1.5 (015):

When I read the development of the heroine getting stolen away, I left a malicious comment to the author.

But then I woke up later, and I’m now the villain who is supposed to steal the heroine.

Leo used to be an affluent rich young master, who fell in love with a foreign beauty and after a night of passion, they got pregnant. The young man returned home to discuss the issue with his family only to be struck by a tragedy that changed his life completely.After eight months of laying in the bed like a vegetable, he woke up because the Almighty Father System selected him as a host. From then on, Leo's life changed once more, but this time, it was not the world that flipped him over, but he was the one who flipped the world upside down.Would you like to read about the story of a vegetable rising from the brink of death and becoming into a godly existence who slayed gods, and demons only so that he could bring a smile to his daughter's face? Come along then.

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

Sa Bina was on her way to write her SAT when she suddenly finds herself in a strange world. She is sent to be the old emperor’s concubine, but on their wedding night, the emperor gets murdered by no one other than his own son and the heir! To survive, Bina makes a deal with beautiful but deadly Lucretius and her life in this dangerous kingdom begins.