Jobless Reincarnation - Mushoku Tensei - Chapter 21: Absolute Promise

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.

He died because he could not kill ‘him’.

He lived because he could not kill ‘him’.

Kang Yoonsoo, who had lived 999 lives by losing to the Demon Emperor.

Once again, he went back twenty years in time, back to his starting point.

“I will end this.”

Either he dies, or ‘he’ dies.

The thousandth life of a man who has mastered all the skills in the world begins.

……………………………………………………………

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In the year of 2013, the tide of zombies outbreak exploded in everyone homeland, humanity launches a large-scale battle in the endless nights awaiting for the arrival of the dawn.

The end is approaching, is there going to be a way out for them?

Their faiths were shattered into pieces and buried in ashes in the raging fire.

But within the blazing fire, a newborn hope arise once again.

- Description from Novelupdates

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?