My Divine Envoy (2024)

Both FLs pretend to be eunuchs to stay by the emperor's/king's side. Both MLs have an initially cold personality but are very loving, both FLs are high-spirited.

Both FLs come from the modern day real world into a historical world where they at one point are a servant, and at another pose as a man/are in a man's body. Both MLs are emperors who fall deeply in love with the FL, but realize she must return to the real world.

another time-travel romance drama where a teenage girl travels back in time and falls in love with not a king but a young lord in this one. it is also adorable like this drama and the story is well-written.

My Debine Emissary is the Chinese version of Splash Splash Love.
It's a remarke version, from the outfit the female lead wore before travel to the setting, in episode one is the same.
Yes in the chinese version we can see a full on fall out between the mom and the daughter and we had a little flash back to see the father instead of just a picture

Parallels between My Devine Emissary and Wonderful Fate include:
The female lead is a student who is struggling academically and is reluctant to take her tests.
She travels back in time and/or into a historical narrative, where she encounters the ML, the emperor.
The connection between the leads in both dramas is that the leads characters are quite similar in that they initially despise one another before becoming friends.

Both FLs are spirited and a bit silly, and enter the palace disguised as eunuchs. The emperor discovers or knows their secret and falls in love with them.