This Marriage Will Surely Succeed - Chapter 109

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?

Growth cheats? Infinite magic power? The ability to utilize all archetypes? What’s the point if instant death ends everything with a single attack?

High school senior Yogiri Takatou was on a school field trip when he woke up to a dragon assaulting his sightseeing bus, with the only ones still on the bus being him and his female classmate, the panicking Tomochika Dannoura. Apparently the rest of his classmates had been given special powers by Sion, a woman who introduced herself as Sage, and escaped from the dragon, leaving those that hadn’t received any special powers behind as dragon bait.

And so Yogiri was thrown into a parallel universe full of danger, with no idea of what just happened. Likewise, Sion had no way of knowing just what kind of being she had summoned to her world.

In this world, a cataclysm has caused the appearance of monsters and other disasters, emerging from dimensional rifts and gradually pushing the world toward its destruction. To face it, some humans having awakened various magical powers are fighting against this apocalypse.

Dora, one of them, has a special “Avatar” class which gives her access to all the other classes, at the cost of great difficulty to level them up. Despite his enormous potential, he chose to appear incompetent to get his team kicked, just so he could live a lazy life with his family, but his habit of fighting and beating the woman's brother the strongest in the Kingdom reveals her talents and she decides to enroll her in the royal academy.

Reluctant at first, his mother gives him the motivation he needs to pursue this past, but little did they know what kind of monster they threw to the world. Dora is not a hero wishing for peace, but a monster getting addicted to the taste of power, wealth, and freedom.

With his strange condition of being not one but many people inside one body, each with a different personality, but the same thirst for more, “they” use a strange system giving them a new vision of the world around them.

Dora pursues an unknown goal until he meets someone who knows more about his true nature than himself and sets him on a path that will nourish his eternal first, to the cost of his humanity, but in a world collapsing, isn't a monster the greatest weapon?

With many personalities in one body, each having a different relationship with different people, a system taking them further and further away from their humanity, and an increasingly hostile world where humans kill each other while monsters slaughter them, could the situation be worse?

Well, it looks like Dora isn't the only one with a system.

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