Medical Martial God - Chapter 845

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

Accompanied by all kinds of crisis and despair, was the arrival of mankind’s first significant superhero.

Zhao Xu goes back 10 years in time to the day when Arthur’s game servers opened. Only he knows that one year later, the earth will be destroyed and everyone on earth will transmigrate into the world of Arthur! PS: MC is a double character class of Wizard and Archivist, training in both the arcane and the divine, includes metamagic/magic guards/spells/rubies/action points/hyperactivity/pause/temporary effect/activation/in-game purchases in the making.

A man is reborn into the world of Avatar: The Last Air Bender as a waterbender from Katara's tribe. Best of all, he was the same age as her, and he had a system with him to help.He knows the future and a system that lets him continuously get stronger by completing quests or long-term missions, as well as giving him the ability to copy abilities from others for himself. He will become invincible in the world of Avatar, even more so than the Avatar himself.