The replica arrives, and the girlfriend kills everyone due to her first love

Summary

When the global dungeons appeared, my girlfriend stood in the way of the class change portal.

All so her cowardly first love could get the first pick of the new classes.

But the portal was fading, and once it was gone, there would be no second chances.

Seeing that he was a no-show, I pushed her in.

Her precious first love, unable to change his useless skill, died in a beast dungeon shortly after.

And me? I became a Dominator, a master of the dungeons.

But just as I was about to lead everyo