Peltivierre

It was always Elliot's dream to become an Adventurer.
He lacked magic powers to which was why society looked down on him.
His life changed when he was lost in the Forest of Gray Lake, and a book found its way into Elliot's hand. The book was a manual to become strong.
So strong that you could cross the level cap of all adventurers.
A book that contains the secret to surpass level 100.

[ Images on the cover not mine ]

I Know the Secret to Surpass Level 100

Perfect Realm Domination. When the caster masters the skill, they create a world that's completely their own. Unlike the regular Realm Domination, the Perfect Realm Domination cannot be overpowered by another cast of the skill.

It is an entire realm filled with real people, real places, and real set of rules. The caster has the absolute control over what happens in the realm, how the simple natural aspects of the world we know works.

The only way to deactivate it is when the caster dies or deactivate it themselves, and in this case, they have to find Sayu and defeat her. After the woman's cast of the skill, everything became a race against time.

Since Sayu had complete control over her realm, she can alter anything in the world. This takes massive amount of magic that it is forbidden to be used. Casting the spell alone will deplete the magic of the caster, killing them.

Amethyst Maiden