This is really not mechanical ascension - Chapter 789 - 409: 2.2 Billion Metal Energy_2

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

I dedicated 10 years of my life, focusing solely on regression.[Authority: Death Regression has naturally been nullified.

“Finally, the owner has appeared. You read me.”The Archmage’s legacy, the Book of Truth.Binair Dalheim, a dropout of the Elfenbein Tower, accidentally discovers the Book of Truth.“I will awaken your magical talent. In return, complete me.”The dropout boy, whose dormant talent has been awakened, begins his journey to retrieve the Book of Truth as requested.

*WSA Entry****Alex, born into the illustrious and undeniably gifted Blackwood family, was a stark anomaly. While his siblings excelled in everything from music to sports, h e was a blank canvas, utterly talentless. This ostracized him, making him a target for his family's disdain and bullying from his classmates. Finding solace only in the world of anime, Alex retreated into his room, spending days in a state of squalor, fueled by ramen and the fantasy worlds on his screen.One day, while attempting to microwave a plastic container filled with ramen (because even basic kitchen skills were beyond him), the microwave exploded, turning Alex's room into a scene of hilarious destruction. Instead of dying tragically, he finds himself resurrected…in the anime he loved the most, “Swords and Sorcery,” a fantastical world brimming with magic and adventure.As Alex, now a fresh-faced young adventurer in this new world, he discovers he can wield the powers of any character from any anime he's ever watched. Suddenly, his days of being mocked for his lack of talent are a distant memory. He can summon the mystical powers of a powerful wizard, the strength of a legendary warrior, or the agility of a skilled ninja. He even discovers he can tap into the magical abilities of characters from lesser-known anime, like a charming witch from a forgotten shoujo series or a cunning strategist from a tactical mecha anime.Armed with his vast anime knowledge and newfound abilities, Kai embarks on a life of self-discovery and adventure. He'll navigate the complexities of this magical world, forge alliances with unlikely heroes, and face off against powerful foes, all while striving to prove his worth and overcome the trauma of his past. But as he dives deeper into this fantastical world, he'll face a new challenge: can he learn to be happy and find his place in this world, free from the shadow of his former life?***“HAHAHAHAHA! All those useless Isekai animes animes I watched was not for waste after all...Stupid old man! Why don't you laugh at this?”