The Secret of the Strange Demeian Mansion

Penniless and destitute, Celia ends up taking a job as a maid at the dreaded Demeian mansion—so feared even ants would avoid it. Rumors abound: people go missing, the master worships demons... Yet contrary to all the frightening gossip, the mansion's residents are kind to Celia, and she gradually finds herself drawn to their mysterious charm.