It was just another normal day at Laharl's castle. Etna and Flonne were doing chores, and Laharl was....well, being Laharl. He was torturing the prinnies and Flonne had caught him too.
Flonne: Laharl-san! You don't have to be mean to the prinnies.
Laharl: I can do whatever I want, and they don't get payed unless do do exactly what I want.
But that was just the beginning to something big Flonne had in mind to finally get Laharl to accept love. After that day, she had gone off with Etna and told her about changing Laharl's personality to a nicer look. Etna agreed to that when she thought how Laharl could possibly more like the king this way.
Etna: I can see it now Flonne. Just think! I shall call it Etna's Super Remedy for Overlord's! It shall work on any demon, including selfish brats like Laharl.
Flonne: Ah, I see! Maybe if we do this on all the other Overlords and mean demons, maybe everyone will come to accept love~!
Etna: For my own reasons though, I can use this as my own chance to conquer all the other Netherworlds~
Such an evil thought only started because of Laharl and his evil ways, but that's what you get. And now all the other Overlords were going to pay too and fall as a demise to their potion. For now though, it started with Laharl~
Laharl: Etna, I'm hungry.
Etna: C-Coming denka! *secretly puts the potion in Laharl's soda*
Laharl: Well?
Etna: Here you go~
Laharl: ...You seem awfully happy today. Aren't planning anything huh?
Etna: Of course not~!
Laharl: Hmph *starts eating and drinking what was brought*
Laharl: ?!
Laharl: *grabs throat and starts gagging* Nng! E-Etna! W-What did you put into my food?! GAH! *falls over*
Etna: Oh. Just a little something me and Flonne-chan cooked up~
Laharl: F-Flonne too?
Etna: Uhuh. We've come up with the perfect potion to turn you good and happy for us, and possibly me as Overlord of this world!
Laharl: A-Are you trying to kill me?!
Etna: I'm sure you'll make it through somehow. Ba-bye denka~
Laharl: D-Dammit Etna!
After awhile, Laharl turned into a good Laharl and acted like something Flonne had never before seen in Laharl. He had been nice to prinnies, done chores, and a whole bunch of other stuff he didn't usually do.
Flonne: Etna-san~ I think the potion really worked.
Etna: Well of course it did. All of my greatest potions work.
Flonne: You think we could do this to all the overlords and make them as good as Laharl?
Etna: We can try, but it all depends.
Flonne: Yay~!
And so the two journey for the other Overlords, living happy-go-lucky Laharl behind to be nice all to himself. For now at least~