My Post-Apocalyptic Shelter Levels Up Infinitely! - Chapter 647 - The Ultimate Strength, a Strange Yet Familiar Enemy! Part 1

Coming back from the magic world, Riya rebuked her shameless stepmother.She was back to her first life with the world treasure and thought that her life would be smooth sailing.But…What was happening with the environment?Why did the mana suddenly recover on this Green Planet?And why did those magic beasts also appear?Riya: ???Ah, Riya silently swore to secretly become stronger to deal with these magic beasts that went on rampage. She would use her runes to make a better life while watching the world recover from the destruction.Unfortunately, things were not so simple.Her best friend’s brother suddenly locked his attention on her.“Ah, ah, ah, you don't have to mind me….”“The runes you make are really interesting. Can you show me more?” The man smiled and stepped closer.“I…I can, but can you please not come too close?!”Riya just wanted to meditate silently, so how did she suddenly attract this big boss’s attention?

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

What does “being perfect” mean to you? To Hashidate Yuuto, it means everything. All his life long he strived for perfectness until a single incident occured in middle school that ruined his plans of being perfect: He pooped in front of the whole class and parents. Believing, that his reputation was destroyed and that he would never be able to reach perfectness anymore, he wished that the incident never occured. This is when a mysterious Goddess named Maki offers him a button that allows him to go back in time.

Based on the popular Vocaloid song “” by kemu.

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!