Counterattack System appeared when I'm already At The Mahayana Realm - Chapter 374 - 393: Salvation for all living beings

I was reincarnated into another world, and I’ve brought the Horadric Cube from Diablo II with me.
Being a knight is cool and all, but being a wizard is pretty neat as well.
So, which one will it be?

There were two daughters in Jiang Family. Each of them was as beautiful as flowers and jades.

Time had caught up with the famine season. One must be sold to survive.

Jiang Yun Zhu pulled the shorter stick and was taken away by a human broker.

Seven years later, Jiang Yun Zhu’s face was even brighter. She was dressed in rich clothes and surrounded by servants.

At this time, she was already the young madam of Marquis An Ping Manor. It went without saying, she was extremely honorable.

It turned out that the human broker sold her to Marquis An Ping Manor back then.

At this time, Jiang Yun Xiu’s face was battered by wind and frost. Every day, she worried about firewood and rice.

After receiving the brocade handed over by her elder sister, Jiang Yun Xiu gritted her teeth until blood came out. If she was the one who was taken away by the human broker…

Returning to the day of drawing lots, Jiang Yun Xiu snatched the short stick first. This time, she wanted to be the one above others.

Jiang Yun Zhu smilingly took the long stick. She thought it was so easy to go from a maid to the Young Madam of Marquis Manor?

Note: The wealth and honor in the heroine’s dream was earned by her own struggle, not by being sold.

Don’t get sold, live even better!

- 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.