The Demon King Is Being Raised as the Hero's Daughter

Japanese-style Western fantasy light novel + little girls + transformation (already transformed into a girl from the start)

Because she underestimated her opponents, the newly appointed Demon Lord Moyu was forced by a duo of heroes to use a forbidden spell of the demon race, briefly losing her magic.

Just as Moyu was preparing to sneak back to the demon realm, she ran right into the hero duo!

But...

When the hero learned that Moyu had temporarily lost her magic, she let her go without a fight.

But then she took Moyu straight back to the human realm and raised her as her own daughter!

“Hmph! As the great Demon Lord, I know when to yield. I’ve only been captured temporarily. Just wait until I escape back to the demon realm, and you’ll be sorry!”

“Is that so? Then I’d better keep a close eye on you and see what you can do to me, little Demon Lord. But for now... Heh heh heh...”

“N-no! You perverted hero, don’t... don’t come any closer!”

Huh? You’re sending me to an academy, and making a little dragon girl my personal guard? Wait, you’re joining the Demon Lord’s rebel army because you want me to step on you a couple of times? What?! You’re taking me on a trip around the demon realm, and even getting the current Demon Lord to meet me? Hold on! Who’s your daughter? I’m the Demon Lord! No, no, no... Fine, I’ll be your daughter, okay...