I’ll Be the Male Leads Sister-in-Law - Chapter 510

Xia Ning is betrayed by her boyfriend who wants to marry another girl from a rich and powerful family.

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.

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

What would happen if a man happened to travel back into the past where he can undo his mistakes and regret? Near in the future, an unknown being appeared and claimed that a new reality shall be opened up for humans to enter, creating havoc across the world.

However, what they didn't know is that 10 years later, monsters from the unknown void broke through the world and caused massive destruction. The powers obtained from that reality can be brought out to the real world, hence, Earth could defend itself from these monsters.

However, another 10 years later, Daniel Bell has been killed by a bunch of monsters, and suddenly he has travelled back to the past. Is this a fortunate outcome or will history repeat itself? Only the future can tell.

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