MTL - My Koi Sister is Three and a Half Years Old - Chapter 52 Suisui returns the favor

Zhuang Feng is in his last year of high school, and he’s just moved to the city. He lives with his good-for-nothing cousin, who’s always on business trips falling for get-rich-quick scams, and his Saozi (sister-in-law), who tries to make his life miserable as much as possible. There’s one upside, though; she. is. freaking. hot. But one day, he found a piece of her underwear in the bathroom…. And unfolded a series of events that will turn his life upside down.

- Description from Novelupdates

The only way to stop the earth’s doom.Is to seduce the girl who is the student council president.

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.

Ye Xuan, the youngest Martial God of the Heavenly Realm, was ambushed by the four major powers of the Heavenly Realm, resulting in the destruction of his golden body, leaving only a wisp of his martial spirit to escape to the mortal world, reincarnating into the body of a noble family's scion, Ye Xuan, in the Daxia Kingdom.With all sorts of martial arts and divine-level techniques in his possession, from that point on, Ye Xuan shook off his reputation as a waste and defied destiny. Rising step by step from the bottom, he sought revenge for his father, pursued dominance over the mythical lands, traveled the spirit martial world, and returned to the pinnacle of being a Martial God, aiming for the supreme position.Treasure, beauties? Nothing poses a problem! Geniuses, monsters? They all bow at my feet!The peak of martial arts, defying the heavens, stepping on the Heavenly Realm, becoming the supreme!