I'm an Ordinary Returning Student at the Academy - Chapter 30

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.

Jin Lin was not an object within the pond; he would transform into a dragon upon meeting the wind and clouds!

Yu Haoran returned to his youth. Not only did he retain all the memories of his past life, but he also obtained omniscient and omniscient domain towers that could accelerate time.

Look at him: Seize opportunities, seize good fortune, destroy enemies, stir up trouble!

This was a story of leveling up and killing monsters.

- Description from Novelupdates

The first great emperor in the world was betrayed by his confidante and perished. Millions of years later, the great emperor’s soul returned and was reborn as Ye Yan, the son-in-law who was kicked out by the Chu family with a letter of divorce, restarting the supreme journey. Open the gate of immortality, kill the Jiuzhongtian, and cast an invincible name again!

- Description from novelbuddy

She is intelligent, beautiful, calm, and professional. As the youngest chief forensic investigator for the past few years, her future was very bright. All of this, however, changed with a bizarre time-travel.