The Warden of The Witches - Chapter 264:

Born into a unique world where villages fight to gain power and control, the main character, Shi Hao, is a genius blessed by the heavens born under the poorest of conditions. His clan, however, has a mysterious past. To rise up and become the genius he is meant to be, the clan goes through every effort to aid his cultivation as they battle through fanatical monsters and engage in power struggles with other clans. His journey will bring him through unknown lands until he is able to become a person that can truly shake the world.

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.

Hai Xiu has a slight social disorder. After he transfered school, his new teacher tried to help him to treat it slowly by giving him the task of sending and receiving homework and test paper from his fellow classmates. Although Hai Xiu has communication problem, he still stumbled around trying his best to do so. However, he accidentally misplaced the test paper of the school’s resident “bad student”… And thus, started their sweet story together…

- Description from Novelupdates