Conquering the Tower Even Regressors Couldn't - Chapter 13: Fourth Floor, Waiting Room

The strongest Demon Lord dies, and reincarnates as a human. Not only that, he because of various incidents turns into the hero’s best friend.

Follow his journey as he tries to help the hero escape his fate, and on the sideline to conquer the continent while he’s at it.

This book is also known as: “How Programmers Turn a Crappy Game into a Timeless Classic with a Single BUG”Recently, the president of Nitiandang, Gu Fan, once again fell from grace due to a minor bug in his new game.As a top-notch designer in the industry, all of the games designed by Gu Fan have very distinct characteristics:At first, players felt that these games were monotonous, dull, and purely revolting garbage.However, once players discovered a major bug, the gameplay underwent a drastic transformation, rendering them sleep-deprived and unable to quit!So, players once again launched a major debate over “whether this is actually a bug or a game mechanic.”In response to this, Gu Fan clarified in an interview with all seriousness:“Hello everyone, I'm the game designer Gu Fan, but you can also call me by my English name: fan·gu (means rebel).”“I want to reiterate firmly that these so-called 'core gameplays' were not part of our company's original design—they are bugs! It's just that we didn't fix them because the players liked them!”

Guys here is my pitch.....In the sprawling world of fantasy, we’ve often been treated to tales of heroes reincarnated with divine blessings, legendary powers, or cheat-like abilities, thrust into magical lands as shining saviors—or chaotic terrors. But what happens when the very concept of reincarnation becomes a curse? When the divine boon is a big fat joke, and the “cheat system” doesn’t quite… cheat?Enter John, the unluckiest reincarnate. Blessed by a god and thrust into a fantasy world, he dreams of glory, power, and adventure—only to wake up as a normal, utterly powerless bird. Not a mythical phoenix, not an ancient thunder eagle. Just… a bird.To make matters worse, this world is no ordinary realm. It's a land scarred by the devastating legacies of past isekai’d heroes and villains, whose reckless exploits piled skeletons into mountains and turned their cheats into harbingers of chaos. Fed up with these unruly intruders, the ancients of the realm banded together to create a world-shaking seal: all reincarnated souls are trapped in the bodies of harmless animals, confined to isolated sanctuaries that function more like fantasy zoos.Here’s the twist: this isn’t mercy. It’s a resource grab. The powerful beast tamers of this realm have turned these reincarnated souls into exotic pets, prized for their cheat-like potential.John finds himself at the bottom of the food chain in every sense. His cheat doesn’t work. His human form is gone. And his world is filled with predatory cultivators who see him as either a snack or a tool.But John isn’t one to give up so easily. What starts as despair quickly turns into cunning survival. With wings and wit as his only tools, John must navigate layers of misfortune, dodge fate’s sharp talons, and cheat his way through a world determined to keep him grounded.Get ready to join John on a wildly unconventional journey—one where reincarnation isn’t a ticket to greatness, but a death sentence he’s determined to rewrite. His story is one of humor, wit, and persistence, as he explores a world where he is the joke and his survival is the punchline.Main tags: reincarnation/isekai, beast taming cultivation system, comedy, action, adventure.Of course No-harem!

I accidentally changed the whole world, the resurrection of the dead, genetic variation, recovery of the qi, mountain and seas reborn, land and seas expanded and evil spirits have started to appear.

Ghosts are now commonplace. Some people now have three heads and six arms. Some people have obtained martial arts techniques and ordinary people are now just cannon fodder.

Fortunately, I have acquired an ability which can make various items mutate.

books into martial arts or cultivation manuals,

fruits into precious treasures of heaven and earth or poison that you can only imagine and…

weapons, that can split the earth or gain sentience!

- Description from Novelupdates