MTL - The Global Reshuffle of Space - Chapter 21 shocking price

The Wilds relentlessly reclaim all things. Humanity shelters within their ever-dying cities. Mages create the only path forward.Tala had to fight tooth and nail in the Magic Academy to forge a path to power that was her own. She knows it’s her duty to use that power to serve humanity, defending them against the creatures of the untamable wilds. However, she skipped a few steps in her education, like apprenticing to someone who actually knows what they’re doing.Now, Tala has to balance learning as fast as she can with paying off the veritable mountain of debt the Magic Academy dropped on her shoulders for the opportunity; not to mention staying alive.Even though she should only be a Mageling, the world considers her a Mage. Bless the stars she directed most of her magic toward survival.

I became a side-character who died in anguish because of her good-for-nothing husband.

If I can’t avoid getting married, why don’t I change who I marry instead?

“Excellent, marriage sounds good.”

“Wise choice. Then let’s have a wedding ceremony that isn’t too ceremonious. Following that, I’ll need you to go down to the Fief and behave like the lady of the house until I call for you. Naturally, there won’t be any time to spend in leisure whilst dousing yourself in luxuries.”

“I’m not marrying you, but your father instead.”

“……Pardon?”

“I’m not going to marry you. Do you have a problem with that?”

In the early world of immortal cultivation, there was no physical cultivation among immortal cultivators. And a top bodybuilder who came from the earth has opened up a new path here and became the ancestor of physical training.

- Description from novelbuddy

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.