Both have an unusually close and later romantic relationship between the ML and FL who are either biological or (unknowingly) adopted relatives. Both MLs are very flirty, jealous, and over-protective of the FL who is younger and more immature.
Both are short length dramas with a quirky and cute FL and an older ML who has a crush on the FL which she is oblivious to. Both couples are uncle and neice.
Both dramas have a historical setting and a very flirty, somewhat naughty ML. The main couple is either related (possibly half?-uncle and niece) or the FL believes they are (siblings).
