So What If It's an RPG World - Volume 7 - Chapter 18: Tower of the Ancients

Rin was a nobody—just a gamer with a love for manga—until death dragged him into another world.Reborn as Auren, the third prince of the cruel and war-hungry King Aurelus of Austerra, he enters a realm ruled by magic and divine systems. Every person is born with a Divine Frame—a gift that defines their class, power, and fate.Everyone… except him.Frameless. Powerless. Disposable. Auren is cast aside as a mistake that shouldn't exist. But hidden beneath that flaw is a terrifying truth: no Frame means no limits. With nothing holding him back, he begins mastering all paths—mage, warrior, healer, assassin—enhancing them with Earth’s forgotten science.In a world that thrives on order, Auren is chaos. And from that chaos, a legend is born.

More than ten years later, this sentence gradually spread in Elbaf Continent:

Never use magic to deal with tyrants, because you will find that he will return your spells to you thousands of times after being strengthened by countless magic specialties.

This is the story of a dragon-shaped self-propelled fort that keeps doing things in another world.

There is nothing that one magic can’t fix. If there is, then there are more. ——Izawa

- Description from novelbuddy

Monsters lurk in the night, but what if something else hunted them? An incident in his childhood left Velik an outcast with a racial subtype that thrives at night and unique class called [The Black Fang], which focuses on just one thing: killing monsters. He’s good at finding them, and he’s good at slaying them. For ten years, he’s been gaining levels and sharpening his skills on the thousands of monsters infesting the wild lands of the frontier. For ten years, he’s kept a lonely stretch of towns safe. Despite his efforts, this year has seen an explosion in the monster population, so much that he’s no longer capable of protecting everyone by himself. This draws the interest of another monster hunter, one that’s professionally licensed, but he seems more interested in investigating Velik than anything else. At least with him there, Velik is free to finally explore the mysteries of the deep wood, where he believes the source of all monsters resides. Every answer he finds leads to new questions, and not even Velik himself knows the truth of what happened on that fateful day. One thing’s for sure: not even the monsters are safe in the dark.