In Naruto as Zhongli - Chapter 15: INAZ - 14

Bai Fan was a Chinese medical university student who woke up as a Japanese high school student named Kitagawa Tera about half a month ago.It was just like a typical starting point in a novel. He re-experienced life as a high school student in his twenties. Youthful, energetic girls, and colorful love comedies…That should have been the original plot…However, heaven was obviously playing a joke on Bai Fan as he had not inherited any memories of the original Kitagawa Tera.Follow the level-headed and cold Kitagawa Teru as he navigated around his new world with the ‘System’ that constantly gave him supernatural quests to clear.

A master assassin transmigrates into an interstellar era.

Other players were responsible for competing in the e-sports arena, while he was responsible for stringing up and beating up the other players.

His sword was hidden during the peak of day, and he was a gentleman who arrived in a flash of light;
As a vanguard of the eternal night, he was the variable between life and death in the world.

“As you know, the Star League’s difficulty levels are arranged in this way:
Paradise < Simple < Normal < Difficult < Nightmare < Hell < [Tyron Odin]”

- Description from Novelupdates

Oosuki Masato is an ordinary high school boy who is magically transported to an alternative world, but for some reason his doting, over-protective mother comes along as well.

A giant golden tortoise, as huge as the world, crosses a broken world.

Seeing the vast world in ruins, Xu Feng slammed the giant golden tortoise on the head.

“Be careful next time, don’t use such brutal methods.”

The story begins with a young turtle-raiser who wants to live a stable life in a small family.

- Description from novelbuddy