MTL - Jade Without Fragrance - Chapter 175 stunning

Allen, an eight-year-old boy from a poor family in the royal capital, is living a poor but happy life together with his mother. One day, however, memories of his previous life suddenly come back to him and he remembers that he is in an dating sim game and that the capital will be destroyed by war if he doesn’t do something about it. If this continues, both he and his mother will be killed! With a sense of urgency, he decides to rise to the occasion in order to save his precious mother’s life and save his favorite character, the villainous young lady Anastasia, the only girl he liked in the game, from her all too tragic and ruinous end. This is the story of a man who isn’t even a character in the game, but who strives with his steely determination and uses all the knowledge he has to turn overcome fate!

Gawain is dead and was transmigrated, but there was a slight problem during the process.
After floating for more than a hundred thousand years on a different continent, he felt that he might need a body to become a complete transmigrator, but he did not expect that…

- Description from Novelupdates

An alien race invaded the Earth on June 6, 2128. At the midst of this war, many nations allied with the alien threat and the war nearly wiped out the rebelling humans of the planet. At the edge of mankind's survival, the United Nations Army launched its forces to eliminate the immediate stellar threats that loomed over Earth.

General Seeker Carlean, commander and leader of the mission, risked and gave his life to destroy the immediate stellar threat. The battle was won though Earth lay in ruins. Perhaps mankind will live to see a few years of peace before the alien threat returns to wipe out their existence.

At the immediate aftermath of the stellar battle, the fallen Seeker Carlean awakens and finds himself at aged 17, living the peaceful life he lived 16 years before he died.

So begins a new game in the battle for humanity's survival.

There was no warning and it took them by surprise when the meteorite hit the earth. They thought they were doomed, but they managed to survive the apocalypse. They lost billions of lives because of that incident, and it took them decades to be able to stand on their own feet, but when they thought that they were fine, they were wrong. They found out that the meteorite brought something with it, they discovered a species and they called them Extrateressterial Parasite. It devoured and consumed anything that was alive, and they realized that the apocalypse was just the beginning of their suffering.

After centuries of trying to survive, Archie Lancaster the one who believed the end of humankind could be changed decided to do his best and tried to become one of those people that prevented humankind from extinction. His path wasn't easy nor peaceful, nothing could be described what kind of experiences he had been through.