I Became the Ghost Duke's Daughter

Unwanted as an heir, Theresia Oblen is sent from her noble home to live with the ghostly Duke Everdin. As someone who can see phantoms, the haunted rumors mean little, but the residents of Everdin Manor are no average ghouls. Despite their lively warmth, they live under a curse that turned them into invisible beings. Theresia hopes that by absolving the woes of the manor's true evil specters, she can restore the duchy and return home. Can she put these spirits to rest and finally live in peace? (Source: Tapas)