Humanity's strongest hero has been defeated, and brainwashed by the Demon King into becoming a devoted Demon Sword Princess.
At least, that's what both the human empire and the monster faction believe.
But as far as the hero Via herself is concerned...
The good news is that the holy sword's last remaining power kept her from being brainwashed.
The bad news is that, besides the hero Via being transformed into the Demon Sword Princess Veeya...
Her teammates, who have already fallen completely into depravity,
are plotting something untoward against Miss Demon Sword Princess.
The former priestess, now a full-fledged lich, seems to have developed some rather strange feelings about her friendship with the "hero."
The mechanic... now, she should probably be called the automaton girl. She suddenly pulled out a whole pile of strange little gadgets that looked like bad news.
And never mind all that.
Her former nemesis, the Demon King...
is now completely overpowering her!
Veeya:
Wait, who's having a litter with you, you virgin succubus?!
Let go of me! I'm engaged to the Empress!
For Veeya, who has absolutely no experience with any of this, it's all a bit too intense.
What's more, she's realized that if she wants to play the part of a proud Demon Sword Princess without being found out...
she can't back down. It seems... she even has to act like a bratty little girl and pick fights first?!