The hero was betrayed and defected to the demons, only to be turned into a pink-haired little cowgirl by the scatterbrained Demon King!
From then on, she was forced to wear a maid outfit, worked to the bone by her scheming boss, teased by her succubus roommate, and made into the Demon King's body pillow. She grew more and more timid, too!
And it gets even more absurd!
The aloof female disciple who once worshipped her had turned into a dog-eared girl who only knew how to wreck the house. The pair became the infamous "money-losing duo" of the Demon King's castle, struggling on the brink of being sold to the pleasure district!
Even the stern spirit of the holy sword had been turned into a tsundere little girl, complaining bitterly every day!
Later, the little maid stubbornly set out on a journey of revenge, swearing to make the traitors pay in blood.
Later still, she found her wife and daughter, who had survived.
"Darling, I can overlook you being prettier and sexier than me, but what is your relationship with those women?"
"Even if Dad becomes the top courtesan in the pleasure district, I won't look down on him!"
"Huh? You're not even a little sorry for me? Wait, I don't work in the pleasure district!"
The first volume is mostly everyday life, following the protagonist's downfall, amnesia, and eventual "comeback."