Both are historical dramas in which the MLs are pretending to be eunuchs in order to investigate a case. The FLs learn their secret.

Both MLs pose as eunuchs to accomplish some goals, and both FLs are spirited but kind. Both are historical mini dramas.

Both MLs are pretending to be eunuchs and are required to marry the FL who falls in love with them before learning their secret.

Both are about the ML pretending to be a eunuch and becoming involved with the FL who eventually learns his secret.

Both have a protective relationship between the leads that begins as adoptive siblings and then evolves into a romantic relationship with the ML falling first. Both have a SML who has a one-sided love for the FL but respects her choice and helps the couple.

Both are short length dramas about a star-crossed romance between a pair of adopted siblings who fall in love as adults.

Both couples grew up together since childhood as adopted siblings with the ML falling first and becoming both possessive and protective of the FL.

Both are mini dramas with a rich ML and a chef FL. Both couples have good chemistry and ML is deeply in love with the FL.

My Boss is an adaptation of the same story as Marry My Husband, just in short length form with some changes.

Both have a celebrity and a non-celebrity of opposite genders who accidentally bodyswap and must work together to figure out how to swap back.

Both are mini dramas in which the ML has a secret identity/connection to a rival sect. Both FLs are thought of as devils involved with many men, and the MLs are brought as their concubines.

Both have a seaside setting. One ML is a resident, the other a stranger who arrives. The MLs have a grumpy/sunshine dynamic and come from very different worlds.