The Heiress's Return: From Zen to Zenith - Chapter 1553

All things must come to an end, but so long as possibility exists, even the cessation of all things will be greeted by reality anew, endlessly repeating but with the steps taken along the way varying infinitely...If you would like to support me or read up to 50 chapters ahead, search for me on Patreon at Eins_left_foot.

Yuki, a high school junior, dies heroically saving a stranger and is reincarnated in a fantasy world, where he discovers an extraordinary and unrivaled power.

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.