MTL - I Am Invincible From the End of the World - Chapter 6 Beautiful roommate?

In the next life time, he would absolutely not become an author.
He would once again be cursed to the danger of crossing over into a book.
During the time when he broke free of his shell, what he first saw was just the handsome, handsome male lead that he had written.
During the time when the male lead was pinching the small soft flesh of his neck, it was also his first time hearing the male lead’s voice.
“Return goods,” the male lead said in this way toward the vendor stall’s owner.
Pei Bufan: “…… meow?”

- Description from Novelupdates

SynopsisElian was once a healer—a rare one. His body fluids could cure any wound, and because of that, he was treated not as a person, but as a tool. Abused and violated by both men and women in his own guild, Flameborne, he endured unspeakable horrors in silence. In their final battle against the Demon Lord, they abandoned him like discarded trash.But death was not the end.The gods took pity. Reborn as Caelan Virelith and blessed by a goddess, he awakens in a new world with a powerful gift: the ability to form Essence Links—magical bonds forged through intimacy that unlock skills, power, and potential. Still a healer, but no longer powerless, Caelan begins his journey not only to grow stronger, but to hunt down those who broke him... and make them kneel.This time, he decides who gets saved.--Content Warning:This story contains mature themes, including sexual content, abuse, and revenge. It is intended for readers 18+ only. Reader discretion is advised.

The maniac who was crazy about all kinds of fields such as military and steampunk had been reincarnated.

However, his father was King Sejong the Great?

The mania-wise king and his crazy maniac son.

Along with the ministers, and countless humans who were getting exploited.

Even today, the night of Joseon was filled with the light of overtime.

There is nothing in the world that cannot be solved by a transaction, if there is, then make a pure (ang) clean (zang) transaction.

If you say it, you may not believe it. The people who have traded with me are all over the world.

Trading is a great cause that is beneficial to physical and mental health and that people cannot refuse!

- Description from novelbuddy