MTL - From Becoming the Master of Monsters - Chapter 624 Yuuto and Yuri who became adventurers

What if your worst enemies suddenly became your most devoted allies—because you turned them into irresistible, enchanting femboys?Meet Cecil: a cunning, ruthless mastermind hiding an extraordinary power beneath his calm exterior. With a single stroke of his feathered pen, he transforms those who dare to cross him into beautiful, loyal members of his ever-growing harem. But this isn’t some silly game—it's a calculated campaign to build a nation unlike any other.In a world of secrets, magic, and brutal politics, Cecil must navigate a treacherous landscape filled with dangerous foes and hidden agendas. His targets? Only those who insult, threaten, or betray him. His allies? A charming, fiercely loyal band of femboys who live by his side in a shadowy sanctuary.If you think power is all about strength and magic, think again. For Cecil, true power lies in control, seduction, and a pen that changes fate.Welcome to the Velvet Court—where loyalty is beautiful, and revenge is intoxicating.

Vahn was an atypical youth. Due to a rare mutation, his blood had the potential to target and attack ailments within the human body. Touted as a universal cure, people had elevated his status above the norm and given him the classification "Panacea". In the media, he was hailed as a great hero who would usher in a new era or human wellness. However, behind the scenes things weren't so bright. Being a unique individual, Vahn spent his entire youth locked up in a lab with various scientists and research teams using his body and blood to perform endless amounts of experiments. The only solace in his suffering was the various anime and manga made available to him between experiments. He often imagined himself as the protagonist in a world of his own, finally in control of his own destiny. For years he nurtured this desire, until at the age of 14 he died when an organization had tried to kidnap him from the lab...

However, he did not know that he was not raising just a harmless pet, but a biological weapon secretly made by the government… a real monster.

As a former librarian, Rand felt that he had been living an ordinary life, the one that he had reclaimed unconsciously every single day.

Recently, he has been a little upset because the pet fish he accidently brought home to raised seems to have undergo some strange changes

Well, it turned into a merman.

- Description from Novelupdates

This novel is also known as From The Start, I Traded A Galactic Warship

After getting a trading platform three thousand years later, everything in the world has become an antique, worth a thousand gold.

But it was also learned that three years later, aliens invaded, human beings fell, and the dark starry era began.

In this era of unprecedented change in tens of thousands of years.

Shen Shi decided.

First trade a space battleship, and then talk about it.

then–

Battleships come to the world from outer space! Global shock! Starry Sky Era, open in advance!

- Description from novelbuddy