Leading the young lady I picked up astray, making her the happiest girl in the world! - Chapter 69 - Journey’s End 1

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

It has been more than ten years since he was transported to another world. The protagonist Deris Fahrenheit, who has became a magician with special circumstances, was freely enjoying his life in this world. However, a girl appeared before him and asked him to make her his disciple. That girl seems to be a transported person――

It’s a story of him who becomes the girl’s teacher and trains her to achieve her revenge (?) in otherworld.

Lu Shang picked up a dirty teenager while discussing work at a bar. It was merely happenstance, but memories from ten years ago resurfaced when he saw the gunshot scars on the teenager’s back.

Lu Shang asked him, “What is your name?”

“Xiao Li… My surname is Li, so they all called me Xiao Li.”

“You don’t have a name?”

“I don’t remember.”

Lu Shang said, “Then I will call you Li Sui. From now on, you will be with me.”

From that day onward, a young “lover” was always by Lu Shang’s side.

Years later, Dr. Leung teased Lu Shang, “You didn’t get his heart, instead your heart caved in; boss Lu, that doesn’t seem like a bargain.”

What was originally an ordinary day, suddenly became a historical turning point. Enormous, mysterious Cubes appeared all over the world without warning and as if Judgement Day’s spears, inserted themselves into the blue planet.

From inside the enormous Cubes, endless streams of monsters gushed out alike raging tides, utterly defeating the unguarded armies of each state in the blink of an eye.

In order for humanity to preserve its final embers, the heads of states issued orders of retreat, to no longer attack the Cubes but rather to cling to remote cities, which they turned into self-sufficient survivor bases and around which they built 100-meter-tall Walls of Life!

Many years later, while bearing the heavy weight of history, the first expeditionary force brought back a world changing piece of information. The Cubes possessed exceedingly high intelligence and they regularly transmitted mission instructions to humans nearby. The mission rewards were incredible.

Since then, humans rushed out of the confines of the walls and once more set foot on the wasteland!

- Description from Novelupdates