Prosperous Marriage: Married to My Brother-in-law - Chapter 24 If I Knew_1

When a terminally ill young man awakens in the world of his favorite childhood game, he realizes he isn’t the protagonist, the destined hero, or even a major side character. Instead, he has become an extra—a disowned noble barely clinging to relevance in a world where strength determines everything. Worse, his fate in the game was to die an early, meaningless death.Armed with only his knowledge of the game’s storyline and a common system that tracks his stats and skills, he is determined to survive. But mere survival isn’t enough. He remembers a hidden easter egg from a long-forgotten anime collaboration: the Mangekyō Sharingan—a power limited by game mechanics but unrestricted in reality.With Kamui as his trump card, he walks the fine line between fate and freedom, seizing power from the shadows while avoiding suspicion. As the protagonist and his allies battle against demons and unravel the game’s grand destiny, he secretly builds his own strength—manipulating events, mastering forgotten arts, and even forging ties with villainous factions.Will he remain a footnote in history, or will he carve his own legend in a world that was never meant to be his?

Jiu Xuan Xian Zunlin also unfortunately encountered the legendary dragon attack when he was robbed and thundered. He returned to his youth and became a high school student Lin Yi. He also found his left hand position and was sealed with a dragon..

Since then, Lin has stood in a new world with a strong attitude, punching the old tyrannical gangsters, kicking and defeating the family.

As a result, a strong newcomer rises and officially opens.

- Description from Uukanshu (translated)

Chen Rui, an otaku from earth, is reborn into a human body in another world, who falls into the legendary evil, brutal world of the devil called Mozu where humans are treated as food. He has to survive while facing horrors of the devil, violent dragons and a variety of powerful enemies by depending on a strange super system chip and his wits. Surrounded by Devil’s beauties such as black-bellied lolita princess, cold queens, violent dragons, charming poisonous devils …

Wanting to live in the Devil’s world is hard! Wanting to live in the Devil’s world as a human is harder! Wanting a human to be the devil’s son-in-law is hardest!

Let us see how a small otaku uses power and strategy step by step starting from an ordinary human to writing a legend as the devil’s greatest son-in-law.

“I think we couldn’t do ’that’ just yet, since you’re still recovering…” Hailee answered hesitantly, trying to find a reasonable excuse for her current situation.

“Bulsh * t,” Ramon cursed and got out of their extraordinarily luxurious bed. With impatient steps, the man approached Hailee, like a hunter about to catch his prey. “I’ll prove that I’m okay. Better than the best.” He confirmed his last word with a meaningful smile.

“…” Ugh!

***

Hailee found herself being sold by her adopted sister, Aileen, after the death of their parents in an accident.

However, on the very night she was supposed to serve the bastard who had won the auction, Hailee managed to escape by killing him.

Now, Hailee was in fresh pursuit and must flee the city to escape the accomplices of the man she killed.

While she was fleeing from her pursuers, Hailee accidentally met Ramon who was dying from an accident, to avoid those who were after her, Hailee pretends to be Giana, the lover Ramon had been hiding from the public eye.

Things got more complicated when Ramon woke up and said he couldn’t remember anything.

Hailee of course can take advantage of this and continue pretending to be Giana, but how long? And what about the real Giana?