Son, “Mom” Will Back You - Chapter 24

The world’s largest scale virtual reality game, ‘Kailan’.

“We campaigned for a century, prevailing against all obstacles. The sole exception being the Marshal, who could not be defeated…… the military fame of the Marshal endures, yet the Alliance has been utterly crushed. From this day forth, all the glory belongs to the Marshal, himself.”

As the Alliance government that stood for a thousand years crumbled, the Galactic Empire rose into power. The supreme military leader of the Alliance, Gavin Silla, refused to surrender and chose to fight to the death for his nation.

“Your Majesty, in the Age of Old Earth, mint blossoms were believed to be an omen for reunion. In the language of flowers, it means—

—hoping to see you once more.”

- Description from Novelupdates

You thought being reincarnated as an extra-side character was bad? Imagine being thrown into the body of a villain who is disowned by his own family and discarded by the author.

The world was once at war with 10 alternate worlds. This was known as the Concept War and our world won 60 years ago. All of this was concealed so no normal people are aware of this fact in the current time.

After the death of his grandfather, the high-school student Sayama Mikoto is suddenly summoned by the giant corporation IAI. He learns this world is headed for destruction due to the acceleration of the Minus Concepts. To prevent this, negotiations must be undertaken with the survivors of the other parallel worlds so their 10 concepts can be released.

And so Sayama is caught up in the final battle to clean up after the Concept War which left behind so much enmity.