But for a Slime - Chapter 468 - 080.15 - Giants!

Civilization is destroyed and records lost. Only Dudian survives in a cryogenic sleep. Three hundred years later, Dudian wakes up and must become Dean to survive. Who can he trust in this world overrun by monsters without and within?

- Description from Novelupdates

The whole world is subjected to a highly dangerous standardised exam called the Global Examination. Answering questions by putting their lives at stake, they would live if they passed the test. Every month the exam will undergo reformation while, occasionally, it is random.

Reborn in World of Warcraft : Mastering All Beauty

Zhou Yu was ordered to enter the city and get married. Even though my wife didn't like me, my father-in-law disapproved of me, my colleagues always wanted to bully me, and the bad guys were always looking to take me down, but touch me, that's fine, touch my wife, that's not. Whoever lays a hand on her, I'll take down. I fought until the whole world bowed down, then returned to the village with my wife in glory!