D.E.M.O.N.S: Getting Summoned Weekly isn't so Bad - Chapter 39: Back in Black

Wang Xuan entered Longmao Square and was trapped in it. When he finally left, it turned out…

This is the last building on earth.

- Description from novelbuddy

A thousand years ago, the world shattered.Mana surged into existence, rewriting reality itself. Dungeons tore through the land, birthing monstrous horrors, while beasts mutated under the influence of Primordial Ki, evolving into unstoppable apex predators. Humanity was on the brink of annihilation—until the Awakened emerged, wielding supernatural power to defy extinction.Yet, in this brutal new world, strength reigns supreme, and weakness is a death sentence.Amidst it all, Azvoid Larkson—a nameless figure among the countless struggling to survive—awakens a power beyond reason. A power tied to ancient, forgotten dragons—beasts feared even by the strongest Awakened.With each battle, he ascends. With every dragon he tames, his legend grows.In a world where only the strong thrive, how far can one man rise?

The Special Investigations Unit is a covert organisation that no-one in the city knows about, dedicated to investigating bizarre occurrences beyond the comprehension of the living. The Chief Zhao Yunlan isn’t a simple guy either, being the inheritor of the Guardian Order, he has always been a righteous conformist, excelling between realms of the living and the dead. While investigating a school suicide case, Zhao is attracted to the calm and reserved Professor Shen Wei, but the Professor seems to be rather fickle towards him…

- Description from Novelupdates