M.H.L.I.

Play as Dorian Amore, an 18-year-old student who discovers a magically sealed bookshelf in his inherited house. Each of 21 glowing books contains an extinct race from the parallel world of Vareth. Touching the red book transforms Dorian into a Fledgling Incubus and awakens Yamir Cupid, a voice in his head who tasks him with leveling up, bridging the two worlds, and recruiting human hosts for the remaining 20 books by forming deep emotional bonds. The game blends dungeon crawling and monster-girl capture mechanics with a dating sim centered on the campus setting. You must pursue and romance various heroines, each with distinct appearances, backgrounds, and story lines, gradually transforming them into the other 20 book forms. Combat is turn-based, with management and strategy elements woven throughout.