Leo Thornvale writes LitRPG harem fantasy across five series and counting. Succubi in supernatural academies. Catgirls bonding with forbidden handlers. Bunnygirl aliens on deep-space transports. A hucow milkmaid and a slimegirl on an isekai farm. Succubus roommates crashing through a regular guy's window. If it has horns, ears, or a tail, Leo has probably written a bond progression system for it.
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