MTL - Illimitable Until Death - ~ 015 dominates the audience

I, the protagonist, was just an ordinary NEET, but suddenly I was reincarnated as a tiny white snake in a fantasy world where legendary creatures and gods exist. Not only that, but I awakened in a cave as the offspring of a terrifying Medusa Serpent.Armed with only my human knowledge and my indomitable mental strength, I'm forced to use cunning tactics and rapidly evolving skills to survive against far stronger monsters and humans... So begins the survival story of a former shut-in with incredible willpower, living as one of the lowest-ranked beasts in a world of magic!ᆖMusic suddenly started playing in my head.I'd been waiting for this moment for so long.'Snakes! Assemble'....

Throughout this current life of mine, I will pay no attention to my past lives, nor will I seek future lives. I wish to live vigorously, to pay back debt of gratitude and fulfill duty to avenge, to defeat valiant heroes from all species, and to proudly laugh at all the Gods and Demons of the Six Path of Reincarnation!

- Description from Novelupdates

Transmigrated into a world of swords and sorcery, Aaron awakens in the body of a lowly knight apprentice, an outcast born of a slave mother and ignored by his noble father, Baron Alfred. In a realm where steam has yet to meet steel, Aaron carries the knowledge of a more advanced world and a mysterious Map System that reveals everything around him, and rewards him with strength for every enemy he defeats.But Aaron isn’t content with swinging swords. As he carves out his own territory and introduces inventions that shake the foundations of this primitive land, he discovers whispers of a distant continent ruled by wizards. The knight’s path no longer calls to him. Magic, mystery, and power beyond imagination await.Will Aaron remain a forgotten noble, or rise to become a legend in a world that never saw him coming?

A rookie clerk asked his senior curiously: I heard our President is already married?