MTL - Rebirth of the Supreme Celestial Being - Chapter 21 Fleas?

This is a fan work of “Magic Forbidden Book Catalogue”, and some settings of “Puppet Circus” are added at the same time.

A traveler from a circus enters Academy City to study and live as a puppeteer; at the same time, he secretly fights against the enemies who keep coming to seize the original magic book in his hands, and protects the safety and peace of Academy City by the way.

…The Third World War? Does the mainland dare to call it “World War” without playing?

- Description from novelbuddy

Masaru Ryunosuke is an outcast—a scholarship student in a school of elites, struggling to keep his head down in a world that looks down on him. But when a chance encounter with a vampire attack leaves him at death’s door, he wakes up to a new reality—he's no longer human.Now a ghoul, the lowest rank of undead, Masaru finds himself thrown into a world of ancient bloodlines, deadly supernatural creatures, and secret organizations hunting beings like him. His only guide? Akane Mikazuki, the cold and ruthless noble vampire who saved him, but only for her own mysterious reasons.Armed with the Cape of Dracula, an artifact of legendary power, and an unnatural potential that defies vampire logic, Masaru refuses to accept his fate as a weakling. If the world wants to treat him like a mere undead—then he’ll rise above them all and prove them wrong.As battles erupt between vampires, werewolves, assassins, and monstrous beings, Masaru must claw his way up the supernatural hierarchy before he’s devoured by forces beyond his comprehension. Because in this world, the weak exist only to be devoured.But what happens… when an undead refuses to stay at the bottom?

“There are no heroes. In life, the monsters win.”

...

In 2106, [Mayhem Online], a fully immersive VRMMO game, was released. Soon, it dominated the world's economy when people could exchange the in-game currency with real-life currency and vice versa.

In the year 2107, Flynn Grey, a 22-year-old college dropout with an ambiguous history, joined in the fray of billions of people that had already started playing [Mayhem]. Hoping to uncover the game's secret and earn a fortune, he spent months on adventures without fruitful results.

For better or worse, Shura, Flynn's in-game character, ends up in a great Wyvern's den, acquiring a hidden class and a monstrous race. Join him as he defeats his past and paves his way into becoming a true legend in both worlds.

Nine Realms Sword Emperor, a legend returns, leveling everything.Genius monsters, trampled underfoot, powerful beings, wiped out with a wave of a hand.If people do not offend me, I will not offend them; if people do offend me, annihilate their entire family.