Overworked and burned out, graduate student Jeong Ji-hoon thought his life couldn’t get worse.

Then he woke up inside a game.

Not as a hero.
Not as a commander.

—but as Berga, a disposable “elite mob killer” in the brutal defense game Fortress of End.

Armed with overwhelming combat ability and bound by a 1,000-year mercenary contract, Ji-hoon is forced to hunt powerful enemies for the very commanders he once controlled from behind a screen.

Every kill earns him Cron, upgrades, and influence—
but also something far more dangerous:

Attention.

Commanders like Casey, Lena, and Kiara begin to take notice of his abnormal strength…
then grow interested…
then obsessed.

To them, he’s an irreplaceable weapon.
A trump card.
Something they refuse to let go.

But Ji-hoon has only one goal:

Escape this world. Break the contract. Survive.

Unfortunately—

The stronger he becomes,
the deeper he gets entangled.

And the more they refuse to let him go.