emeraldarrows

Both FLs take the place of their identical twin sister, leading to them living with the ML. The two then fall in love.

Both are mini dramas in which non-humans or gods control humans in some way by writing their lives or directing their dreams. One of these beings ends up falling in love with a mortal.

Both are mini dramas in which misunderstandings and manipulative relatives break up a couple and the FL disappears. Years later the couple crosses paths again, and the ML learns he has a child he didn't know existed. Both MLs either start out or become cruel due to the misunderstandings.

Both are mini dramas in which the couple breaks up, only to cross paths a few years later, leading the ML to discover the FL has been raising their daughter that he didn't know existed.

Both are mini dramas in which the couple breaks up due to manipulation by the rich ML's relatives, and the FL, who is poor, gives birth to and raises their child alone. until the couple crosses paths again a few years later.

Both are mini dramas in which a couple breaks up cruelly due to the ML's parent and misunderstandings. Years later they meet again, and one of them discovers they have a child they didn't know existed, but due to the misunderstandings the couple hate each other at first.

Both are mini dramas with a rich ML and poor FL who fall in love but the ML's parent demands they separate after the ML is injured. The FL then breaks his heart and disappears. When they cross paths five years later, the ML discovers the FL was pregnant when they broke up and he now has a daughter he didn't know existed.

Both dramas are about a couple who break up due to a misunderstanding, with the FL disappearing/leaving while the ML is recovering from an illness or injury. Five years later, the two cross paths again, and the ML discovers he has a child he didn't know existed. Both have similar scenes of the FL getting drunk and confessing things about the past to the ML, and the FL lying about their child's birthdate/age when the ML starts to suspects he's the child's father. The differences are one is a mini drama, the other a full length drama. and the child is a son in one and a daughter in the other.

Both couples work in a hospital, with the ML older and already established in his profession at the beginning of the drama. Both FLs are younger than the ML and fall in love with them first, openly expressing their love, but the MLs are colder personalities who take much longer to reciprocate.

Both are sweet and fluffy youth dramas with a school setting and little to no angst.
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Both are short dramas about a love story between an older office working FL and a younger ML. Both MLs are sweet and loving.

Both are romances between an older FL and her younger co-worker ML who falls for her first, causing her to have to choose between him (who she ends up falling for) and the SML who is age-appropriate but she doesn't love. Both have an office setting and both FLs have overbearing mothers who are pushing them to get married.