Tensei Shitara Slime Datta Ken (WN) - Chapter 349

Hutson, a man reborn into a ruthless and dangerous world, now inhabits the body of a young hunter in a small barony. With no connections and nothing to his name, he must rely on his sharp mind and cunning to rise through a medieval-like society. As he climbs the social ladder, he uncovers a terrifying truth: wizards, beings far more powerful than any knight or noble, rule over the world. Driven by this discovery, Hutson throws himself into the pursuit of wizardry—a path darker and more brutal than he could ever have imagined. In a world where betrayal lurks around every corner, Hutson seeks what all others desire: immortality. With his intellect and ruthlessness, he will stop at nothing to claim it for himself.

The MC (Minato) is a college student who died in a plane crash and was reincarnated in a fantasy world. He was raised alone in the wilderness by his succubus mother, and now he tries to make his way as an adventurer.

Five years ago, she left behind an egg and said, “This is the son I bore for you. When he comes of age, that will be the time of my return.” He thought she was joking, but months later, the son hatched out of the egg, looking like a normal baby but with two shiny, adorably cute little dragon horns on his head. However, she remained far away with no signs of returning.Later, she disappeared for five years, and he went mad for five years, until Little Dragon brought home a woman, and he instantly came to his senses... But Little Dragon said, “Daddy, even though you don't have a wife, you're about to get a daughter-in-law soon. She saved me, and I want to dedicate myself to her in return!”From then on, the father and son found themselves in an open and covert struggle for her affection.“Your Excellency, Miss Si's medical skills have amazed the entire globe, and all the bigshots are busting their heads to court her. Your heroic rescuing act is of no use...”Mo Yinhe suddenly collapsed to the ground, coughing violently, “Quick, go call her to save me!”“Your Excellency, the seven arch-rivals whom you beat until their livers exploded are all Miss Si's biological brothers. They want to take Miss Si back to inherit the throne...”Mo Yinhe immediately announced his abdication, pulling his son to roam the streets: “Sonny, from now on, Dad can only follow you to seek refuge with your wife-to-be.”Little Dragon shook the shiny, adorably cute little dragon horns on his head, “Daddy, I've already arranged a retirement home for you, guaranteed to secure your peaceful old age~”