M.H.L.I.

Dorian Amore inherits his estranged grandfather's house right before starting at Ashford University, and finds more than dust in the basement: a sealed bookshelf holding 21 glowing books, each tied to an extinct race from the parallel world of Vareth. Touching the red one turns him into a Fledgling Incubus, and a voice named Yamir Cupid moves into his head with a job for him to do.

That job is the plot: Yamir wants Dorian to bridge Vareth and Earth by finding human women to host the twenty books still left on the shelf, which means building real emotional bonds with them, not just collecting bodies.

Play consists of pushing Dorian through his new life and his growing incubus abilities in text-based, menu-driven fashion, leveling him up and working his way toward each host through conversation and choice rather than free roaming. The corruption and harem elements follow from that host-hunting structure, and the game leans on written scenes over animation to carry it.