Kaseifu Koi wa Keiyaku Kara

The player is an employee who has become the housekeeper of a large mansion. Several mysterious lodgers live there free of charge, under circumstances the player is not fully informed about. They make demands constantly — "Tonight, come to my room," "Wash my back" — treating the household relationship as one entirely defined by a contract. Whether the bonds between the people living under this roof can actually be changed by someone willing to look past the terms of the agreement is the question the story asks.