emeraldarrows

Both of the couples are deskmates in school, the MLs are intelligent and a bit cold but quietly loves the FL. The FLs are a poorer student and helped out by the ML.

Both dramas have a school setting and similar vibes.
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Both are short length dramas with the same actor as the ML. In both the couples are separated for years due to misunderstanding/lies, and then unexpectedly cross paths again, with one of the leads discovering a shocking twist (in LS the FL discovers the ML who she thought was dead is alive and living under a different name, whereas in LE the ML discovers the FL was pregnant and still in love with him when she rejected him those years ago and is currently raising their young daughter).

Both MLs are the second sons of a very rich family and the FLs are poor and end up being forced to live in the same house as the ML. Both couples face a personal obstacle to their relationship beyond their difference in social status (age gap vs. family disapproval).

Both dramas have a visually impaired ML and a FL who opens up his world.
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Both are short dramas in which the ML is visually impaired and wealthy, and the FL begins the series by sneaking into his home/workplace only to be caught by him.

Both MLs pursue the FL even when there seems to be little hope of winning her affections and she is antagonistic toward him and misunderstands him often.

In both dramas, the FL is a current day doctor and the ML is a doctor from the historical palace who travels to the modern day and tries to adjust to the modern world while falling in love with the FL.

Both dramas have a similar title and vibe. Both MLs were ill and received treatment which left them with non-human abilities or characteristics. Both FLs are quirky and something of a disaster at their jobs, and accidentally learn the ML's secret, which leads from an initial distrust/hostility between the two to a close relationship.

Both are fantasy dramas about parallel worlds and characters from one world crossing over into the other.

Both are a contract relationship with a rich CEO as the ML. Both MLs have a phobia (crowds vs. the dark) that the FL helps them overcome.

Both MLs are rich with a phobia (water vs. the dark).
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