Kyoukai Senjou no Horizon – Girls Talk - Volume 1, Chapter 21: Multiple Presences at the Fork in the Road

After being imprisoned in the basement by her mother for ten years, she ended her cruel and tragic life in death when they forced her to hand over the key to the hidden treasure. Getting reborn in her teenage years, she woke up in the bed of that terrible and powerful man. This time, she must take revenge on her enemy, and now she must live.

He is the heir of Di Hao Group; decisive, cold-blooded yet dotes on his wife a little too much.

She, Mu Qing, was holding space supplies and dressed like a silly village girl.

The beginning was difficult for everyone, and it was still one woman vs two men.

In the face of the upcoming arrest scene, she decisively gave up the goal set by her relatives and turned to the arms of the unlucky boss.

From now on, she will fight for the best, seek justice, and clean up all those who want to harm her.

By the way… Oh no, how could the luck of this unlucky boss get better, and he still hugged her and cried in the middle of the night?

- Description from Novelupdates

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.