Both are mini dramas in which the modern day FL enters a historical setting and finds love with the ML.

Modern day FL enters historical world and falls in love.
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Both are mini dramas with a modern day FL in a historical setting and a royal ML.
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Both have a FL from modern day world entering a fictional historical world and falling in love with the emperor ML.

Both are CEO/employee relationships in which the CEO appears cold but is warm and devoted to the FL. Both dramas while different in length, both have a similar feel/tone.

ML is a CEO with a trauma in his past who ends up co-habituating with the poorer FL with whom he has a past connection. Both are mostly fluffy romantic dramas.

Both dramas are a boss/employee relationship with a past connection of some kind. The ML appears cold on the surface but is sweet and devoted to the FL. Both couples live next door to each other and sometimes together. Both dramas, while different in length, have a similar tone.

In both FL is a modern day doctor who ends up time traveling to the past where she uses her medical skills to heal the ML. Both contain palace intrigue, royal characters, and romance.

Modern day FL and historical ML meet and fall in love due to time travel.
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In both one of the leads time travels from modern day to the past and falls in love with the royal ML whose life is being threatened by his family.

Modern day FL time travels to the past, falls in love with the ML.
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Both are short dramas in which the FL is in another girl's body.
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