emeraldarrows

Both movies are set in school and have a wallflower FL and a gentle-hearted ML.
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Both movies are set in school and have a shy FL who becomes friends with the most popular boy(s) in school.

Both are slice of life Japanese dramas with a ML who is deaf.
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Both movies are about disabled children/teenagers who witness/endure something horrific and must testify despite prejudice against them. Both MLs undergo a lot of positive character growth as they get to know the children involved in the case.

One is the short drama, the other the sequel movie.
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Both are light, short, and incredibly fluffy little romance dramas. Both couples are in school and very nervous/innocent in every action. Each episode has a "hurdle" they must try to overcome to humorous results.

Both are historical dramas with a poorer FL marrying a well to do ML. Both MLs live with an extended family of parents and siblings, and the FL quickly endears herself to her in-laws. Both FLs are intelligent in a certain field (problem solving vs. medicine). The subplots in both are about the ML's brothers and their romances or stories.

Both are historical dramas in which the poorer FL marries the richer ML in an arranged sort of marriage. The MLs live with their parents and family. Both MLs initially have a disability (blindness vs. mental disability) which they later recover from. Both FLs doubt the ML's love (either due to his memory loss or secrets about her identity). Both dramas have a similar tone and feel.

Both movies are set in school with a ML with family trauma who initially sort of distances himself from the FL. Both FLs are very attached to the ML despite him being somewhat cold.

Both are historical Korean dramas with an entertainer (of some sort) ML of a lower station who dreams of travel/another country. Both MLs fall in love with a FL in a higher station.

Both are rather calming and gentle unlikely romances. Both FLs are office workers, quiet, and more withdrawn.

Both have similar vibes and concepts with a mysterious ML who begins staying over at/living with the quiet, more withdrawn FL. The two take a long time to define their relationship.