In historical dramas ( Sageuk ), the "Good Cousin Sister" often plays a more complex role involving political alliances.

In 2022, South Korea’s Constitutional Court ruled the ban on marriage between cousins unconstitutional, recognizing it as an infringement on the right to pursue happiness. This legal shift has slowly begun to bleed into media.

Many K-dramas celebrate the loyalty of a close cousin. They aren't just family; they are "partners in crime" who offer a safe space for the leads.

: A film exploring entangled desires and a "hot love story" between cousins working at the same workplace. Good Younger Sister Cousin (2019)

In Korea, family ties are extremely strong, and the relationships between family members are often prioritized. The term "cousin" can sometimes be used more broadly to include close family friends or relatives who are not directly related by blood but are considered part of the extended family.

As Korean society modernized and strict Confucian values began to relax, storylines shifted toward "Forbidden Love." Writers began exploring the angst of cousins falling in love despite the legal and social restrictions. These stories often framed the romance as a rebellion against archaic family structures, asking the audience: "Is love stronger than blood?"