Reborn with Eyes of Fate - Chapter 30: Morning Chaos

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

In her past life, she was his personal physician, his junior,Due to the age difference, she could only bury her love for him deep in her heart.An explosion awakened her, and she found herself back in his era.When they met again, he was the noble and aloof scion of his family,She was a village girl with a tragic background.But this time, she would not shrink back,She would bravely pursue her love, making this second chance at life devoid of regrets.In public, he was cold and ruthless,In private, he was a devoted lapdog to his wife,His maxim was, “What the wife says is always the truth.”This story is a one-to-one relationship, with both parties being virtuous and strong.

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!

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?