There is an NTR expression in this game, so please refrain from those who are not good at it.
One day, two couples are suddenly sent to another world.
You have to defeat the Demon King to return to the original world, but ...
Earn money from battle drops and prostitution to live in a different world.
I have to pay the money charged by the inn every weekend
The game is cleared if you defeat the Demon King who is the last boss and return to the original world while paying the money.