MTL - The Gate of Extinction - Chapter 349 This is a side effect

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

I fell in love. Her name was Shirasaka Yukino. I could only look at her from a distance. However one day I heard that she already had a boyfriend. Even if I love her, I can’t have her. The devil sent me an invitation. I can make her mine!

Six months of continuous heavy rainfall has caused global floods.The Arctic glaciers melted, sea levels rose, and seawater flowed backward into rivers.Ancient viruses sealed in ice have been revived, leading to biological mutations and racial evolution.Everyone is trapped at home, unable to go outside.Liang Yuan unexpectedly awakens a Lottery System, which not only allows him to win various daily necessities but also different attributes.When everyone is struggling with a lack of food and clothing, Liang Yuan is enjoying steak, drinking red wine, and having a meat-filled diet every meal.A sexy and alluring neighbor, wearing a spaghetti strap bodycon dress, knocks on his door late at night: “Little brother, can you lend some food to your sister?”Liang Yuan: “Sis, isn't everyone short on food nowadays? Do you really just show up empty-handed to borrow food?”

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.