Love behind the Mask

Same setting :
ML infiltrates the Princess's entourage with ulterior motives.
He becomes her male slave because she is addicted to handsome men and ML wants to use that to get close to her and fulfill his mission.

Both are short length historical dramas. ML is submissive with a secret, FL dominant and keeps a harem of men.

- Both FL is rumored as evil/demon.
- Both FL forcefully takes ML as her disciple.
- Both FL has multiple male disciples.
- Both ML first hated the FL and slowly falls for her after finding that she is kind hearted.
- Both ML protects the FL.
- Both FL loses their memory after some accidents and forgets that they were master of the ML.

Both are mini dramas with the same ML. Beloved of a Lifetime has an easter egg in Love Behind the Mask by appearing as a story told by the FL in an episode.