Gender Bender
The hero runs into the Demon Lord, who should have been dead, in his own memorial hall.
Bad news: the Demon Lord is still alive.
Worse news: the person who once fought him to the death is now a girl who can't even afford a meal.
"I gave my life for this. How are you still alive?"
She only wanted an explanation, until her face appeared on humanity's execution order: [Hero's soul revival confirmed. Execute immediately. No conversation permitted.]
The whole world sings the praises of the dead hero, yet cannot accept her while she's alive.
The only one who recognizes her and is willing to take her in turns out to be her old nemesis.
Fine, she'll stay with him. Once she gets her strength back, she'll settle the score.
But the longer she stays, the more this Demon Lord starts acting like he can boss her around.
"You're looking for the man who cut you down back then, got it?"
"I know who you are."
"...Then put that proposal ring away already!"
