MTL - Florist Little Boss - Chapter 48

Bestselling author Elias Vayne has spent years writing stories to escape the horrors of his past. As a child, he was the sole survivor of a massacre that wiped out his entire orphanage. He doesn’t remember how he survived—only that when the slaughter ended, he was the only one left standing.His latest work, The Arcane Academy Chronicles, takes place in Veylin Academy, a prestigious school of magic and combat. But one night, after finishing the final chapter, Elias wakes up inside his own book—not as the hero, not as the villain, but as an extra. Worse, he’s been reborn as Kael, the very same orphan who survived a similar massacre in the story.But something is wrong. The academy isn’t as he wrote it. Characters are acting off-script, unknown forces are rewriting events, and the mystery surrounding Kael’s survival mirrors the one in Elias’s real life. The more he tries to regain control of the narrative, the more he realizes this world may not be his creation at all.

Humans across the world ended up joining a “Demon Kings and Heroes game”.

Several billion people were set down upon another world to act as “Demon Kings” and “Heroes”. Everyone has to chose their starting races from the start.

Zhang Nu was set in the Demon King camp.

He discovered that he could see hidden information that no one else could.
[Slime Demon King]. Low grade demon king bloodline… Not recommended!
[Kobold Demon King]. Low grade demon king bloodline… Not recommended!
[Dark Elf Demon King]. Mid grade demon king bloodline… Can be selected!
[Bloody Giant Demon King]. High grade demon king bloodline… Recommended!
[Abyssal Dragon Demon King]. Strongest starting bloodline… Extremely recommended!

Neptune in One Piece, Tail Beast in Naruto, Fate’s Fantasy Species, Gourmet Captive Cuisine.
This is a dimension restaurant opened in Marvel, connected to dimension world, welcome you to taste the deliciousness of world.

- Description from Uukanshu

The formless ancient world was infested with despicable demons. They hunted and feasted on mankind, keeping the human civilization constantly in a weak and suppressed state.