I will become the Demon Immortal known to the whole world - Chapter 416 - 10: Eight Hundred Years of Closed-door Cultivation!

“Missus, time to fulfil your duties!” Mu Yuchen demanded as he pulled Xi Xiaye closer with his arms intimately wrapped around her waist.

It was a meticulously planned feast for the powerful. Her fiancé had knelt down on one knee and proposed to her sister instead. Robbed of her right to her inheritance, she was prepared for the Xi family to throw her to the wolves.
As she slipped away from her family that had turned their backs on her, she found him — Mu Yuchen, the low-profile and reserved noble that ruled City Z and led Glory World Corporation.

“Mu Yuchen, let’s get married!” He looked up at her, then suddenly stood up.

“Where are you going?”

“Let’s go. Any later and the civil affairs bureau will be closed.”

- Description from Novelupdates

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.]

As soon as he opened his eyes, Li Ming was plunged into these tumultuous interstellar spaces, where countless civilizations held their shotguns at the ready, eyeing everything in the universe with covetous intent. For him, the most crucial issue at hand was solving the problem of food and warmth.Fortunately, he could control special items and gain special ability bonuses—【Thunderclap Armored Exoskeleton—Grade D】【Control Effect: Power Amplification—100%】【Control Ability—Armored Four Arms: Develops four mechanical arms to aid in combat, and amplifies control by 50% with Thunder Element.】He could even evolve it—【Electromagnetic Power Engine】→【Cold Nuclear Reactor】→…【Stellar Furnace】………An evolutionary path with no boundaries in sight, a supreme arsenal spread across the galaxies, and a grand expedition fleet casting endless blood and fire.When Li Ming unfolded the prism wings that covered planets and fired the super-range photon lasers, and the Stellar Furnace in his chest blossomed with a brilliance far surpassing the sun’s, supported by computational power from the Quantum Photon Calculator...In the universe, countless life forms exclaimed, “Flesh is weak; ascend through machinery!”Li Ming helplessly said, “but this really isn't mechanical ascension...”

Dual Cultivation is an art. The more you focus on doing the art, the worse it becomes. Only when doing it becomes part of the art itself, does one truly experience it to its fullest.