Both are historical mini dramas and have leads who work for a shadowy origination as an assassin.
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Both mini dramas have a palace setting and are about the ML and FL who have very different lives swapping bodies due to some natural phenomena.

Both mini dramas have a palace setting and are about the ML and FL who have very different lives swapping bodies due to some natural phenomena.

Both dramas have a palace setting and are about the ML and FL who have very different lives swapping bodies due to some natural phenomena.

Both dramas have the main characters swapping bodies and experiencing a new perspective on life as a result.

Both dramas have the main characters swapping bodies and experiencing a new perspective on life as a result.

Both dramas have the main characters swapping bodies and experiencing a new perspective on life as a result.

Both dramas have the main characters swapping bodies and experiencing a new perspective on life as a result.

Both mini dramas have the main characters swapping bodies and experiencing a new perspective on life as a result.

Both mini dramas involve characters who get in an accident and wake up to find they've body-swapped with someone else.

Both are about the FL and the ML swapping bodies and having to live the other's lives for a while.
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Both are short stories that are about one of the leads traveling to their past to change the other's fate. Both have the same melancholy tone and looping ending.