The Do-Over System:My Beloved is the Villain! - Chapter 36: Lucian’s Instruction

I returned to Earth as the invincible Knight King. But the Gods came with me.

A man who was once called the world strongest agent ended up becoming a teacher after his retirement to train the new generation of agents. After many years of training his disciples, he is killed at the age of 60 by the ploy of a secret organization and was reincarnated in another world with all his past memories.Though he was surprised by the magic and the strange species of that world, he adapted very fast to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his tight discipline in order to reach his goal: resume his career as a teacher which he left halfway through in his previous life.This is the story of a man who based on the memories and the experiences of his previous life, became a teacher who travels through the world with his new students.

Kai’s life was small—coffee-stained mornings, cracked recipes, and a system in his head that tweaked toasters and dough like it was nothing. Then the sky shattered. Aliens—Skraiths, jagged and brutal—invaded, tearing his city apart with green-glowing weapons and relentless claws. Superhumans rose to fight back, fire and lightning blazing through the chaos, but Kai’s world crumbled with them.Hiding in his apartment, Kai stumbles on blood—human and alien, smeared on his wall after a superhuman battle. His system, once just a tinker’s tool, awakens, offering him a choice: mimic their powers, temporary and wild, through the blood itself. Desperate, he takes it—stealing pyrokinesis, then electrokinesis, then kinetic energy, each power burning through him, fading fast. But it’s not enough. Armed with a humming Skraith weapon and a body tougher from alien blood, Kai joins a ragtag crew of enhanced fighters—Liv, Rylan, Jace, and Tucker—scraping to survive in a warzone where every shadow hides death.As Skraiths swarm and the city burns, Kai’s system pushes him deeper, analyzing, integrating, crafting minor enhancements—durability, strength, sparks of power that could make him a target or a savior. Government factions, rogue scientists, and the aliens themselves start sniffing around, drawn to his strange tech and blood-stolen abilities. By the time Kai crafts his first super-powered enhancement—an artificial strength boost—he’s no longer just a tinkerer. He’s on the edge of something bigger, something dangerous, where blood and sparks could forge a hero—or break him entirely.In a world unraveling, Kai’s fight for survival becomes a desperate race to master his system, outrun the Skraiths, and confront the truth: the power he’s chasing might destroy him—or remake the world.

During an internal Navy hearing, the top brass conducted a serious inquiry into Rogers Daren, the so-called “scum of the Marines” and Admiral of the North Blue.“You’ve had improper relations with royal princesses and noble ladies from multiple North Blue kingdoms?”“I call it showing care for the people.”Marines High Command: …“How do you explain the absurdly high salaries of the North Blue Marines under your command?”“Well, with what the HQ pays, how else do you expect them to risk their lives?”Marines High Command: (ーー`)“Why is the North Blue fleet equipped with technology from Germa?”“That’s just military-civilian cooperation. Germa 66 was moved by my sense of justice.”Marines High Command: (○_○)“And how do you explain the unusual deaths of a Celestial Dragon in the North Blue?”Daren sighed.“A maritime accident… truly unfortunate. I personally express my deepest condolences.”Marines High Command: (._.?)And so begins the story of a rebellious, unorthodox Marine.