Captured, I Became the Demon Lady's Beloved Dog

Demons invaded, the Holy Kingdom fell, and everything sank into the abyss.

Bearing the name of savior, he crossed worlds, hoping to turn the tide. But before he could get halfway through his undertaking, he met an untimely end. Defeated in battle, he became the captive of a demon girl.

That day, he stared blankly at the sky... mumbling incoherently...

I'm going to die... I'm going to die... There's really not a drop left!

Succubus: Is that all you've got? The savior of humanity is nothing special after all~

"Hey, hey, Savior, wouldn't it be fun to corrupt your System, too?"

System: ???

Nothing matters anymore...

(Fallen... How sad.)

The church's saintess? The kingdom's Sword Saint? The empire's empress? The North Sea's siren?

Sorry...

There's no going back...

I've already become... an agent of chaos...