One Piece - I Am A Different Luffy! - Chapter 4 - 3 - Alvida.

BL manhua artist, Ti Xiao, has been single for many years. As such, he is under constant pressure to find a partner and get married. His family’s little niece shipped him together with her school’s English teacher to form a CP. The editor at work also want to introduce their friend to him. One day, a new neighbour moved in next door. He couldn’t help but notice that he seemed kind of reserved and cold. After getting a glimpse of him, he was ready to make trouble. He used his numerous ninja skills to discover his new neighbour’s identity. It turned out he was the English teacher at his niece’s school! Not only did he like his work and was his fan, but he was also his editor’s friend!

- Description from Novelupdates

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.

what will happen in advanceThe Empire will fracture, the princes will rebel, and the world will be in chaos!And his tribe will be annihilated and his people will be killed and enslaved!This is not a good era to live.In this chaotic era, the only way to survive is to fight!In blood and fire, he will be baptized into an Overlord that would shake the world![ The character also has a system that will help him to navigate this new world. Enjoy as he begun building a new kingdom in a chaotic world]

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates