Both dramas involve a contract marriage between a couple in order for the ML to make his ill grandfather happy,

Both dramas involve a contract marriage between a couple in order for the ML to make his ill grandparent happy,

Both are dramas about a contract marriage that becomes true love between a poor FL and a rich ML. Both MLs marry in order to appease their grandparent.

Both dramas involve a contract marriage between a couple in order for the ML to make his ill relative happy,

Both dramas feature an arrange or forced marriage in which the FL initially doesn't like the ML and continually makes things difficult for him. Both are light historical dramas.

Both are mini dramas with the same actress as the FL, and in both she's a strong and domineering character. MLs are weaker or subservient and "belong" to the FL.

Both FLs time travel to the past to kill the ML and prevent their world from being destroyed by him. Over a series of time travels or lives, the FL falls in love with the ML. Both MLs are morally gray and misunderstood.

Both dramas have the same actor and actress paired as the main couple, so if you enjoyed their chemistry in one, you will enjoy it in the other.

Both are set in school with a bubbly and cute FL and a cold or shy ML. One of the two tutors the other. Both have a close circle of friends, two of whom are the secondary couple.

Both MLs are shy and withdrawn, FLs are more outgoing. Both are set in school and one of the characters' family owns a dessert shop.

Both have a smart FL and a ML with past trauma and a cold personality, and a childhood connection between the leads. Both dramas revolve around the two solving a series of mysteries and conspiracies.

Both are mini dramas in which both FLs are modern day women who transmigrate into the body of the "ugly" and unloved wife of a wealthy royal man. The FLs start by fixing their scar on their face and then confuse the ML by their change in attitude.