There's a pawnshop in the Underworld. People have heard of it, but no human or ghost has ever seen it.
But if your heart is burdened by an obsession, if that obsession is deep and powerful enough, congratulations: the door to the Soul Pawnshop will open for you and guide you inside.
Anything can be pawned here, whether it's something intangible or material.
Payment can be anything: wealth, beauty, power... If you can imagine it, I can take it in exchange.
But once you pawn something, it's gone forever. You can never redeem it!
So, dear customer, what would you like to pawn? And what would you like in return?
A quick-transmigration story in episodic format, with real-world settings, worlds inside books, and fairy-tale worlds. There's a couple, the heroine's personality varies, and the hero is clingy.