In DC/Young Justice with the Omnitrix/Ultimatrix and a Chat Group - Chapter 3: Let’s check my options here...

Anyone who could construct a stable Spell Model could become a Wizard — that was the Wizards’ ultimate secret! Having been given a new life as the son of an aristocrat and armed with a super quantum computer from his past life, Spell Models came as easily as breathing to Merlin. With this overwhelmingly huge advantage, would Merlin become the greatest Grand Wizard of all time?

- Description from Novelupdates

The truck driver brought Ling Xuan to the parallel world World Blue Star for the year-end award.

Here, the physical body travels to replace Ling Xuan, a senior high school boy with the same name and surname, and obtains a check-in system.

(The introduction is pale, please see the content for details.)

- Description from novelbuddy

At age 23, Liam Sanders had tasted everything life had to throw at him. As an orphan at birth and a victim of the system, he lived his life believing that he was just an ordinary person. His life was filled with misery, but there was one ray of hope in his life- his girlfriend.That lasted until he found her cheating on him in the middle of his apartment with his best friend. Feeling betrayed, Liam sought to end it all by taking his life, and just as planned, he got hit by the truck in the middle of the busy street.It should have been Liam’s end, but for some reason, he survived and woke up three days after in a hospital with no injuries and a whole new set of memories in his mind.And that is how he became the Immortal Warlock in the Modern World.He was oppressed once, and now, it is time for Liam to oppress everyone in the world.

For ten years, Ryn lived in quiet exile with his wife Mira, far from a world overrun by supervillains. But when the flames of chaos reignite, he’s forced to return to the battlefield, stronger and deadlier than ever.By his side is Mira, his unwavering partner—devoted, ruthless, and hiding a darkness Ryn can't see.Enemies rise, old ghosts return, and war looms on the horizon. Ryn seeks justice, while Mira seeks to protect him... even if it means drowning the world in blood.Let them come.