These years represent specific "waves" of production. 2017 was a peak year for the VOD (Video on Demand) market in Korea, while 2021 saw a resurgence in higher-quality digital productions.

In Korean culture, family relationships are deeply valued and play a significant role in shaping societal norms and expectations. The concept of "filial piety" is deeply ingrained, emphasizing respect and care for one's elders and family members. However, like any other culture, Korean families are not immune to complexities and challenges, particularly when it comes to relationships between siblings, spouses, and in-laws. This article aims to explore the phenomenon of "sister-in-law affairs" in Korean culture, focusing on the period between 2017 and 2021.

Exploring the Nuances of Modern Korean Mature Cinema: Themes of Forbidden Desire

: Reviewing a Korean drama or movie from 2017 or 2021 that involves themes of sister-in-law relationships, affairs, and possibly features characters around the age of 18 or 72.

Korean society places a high value on familial hierarchy and social propriety. The breaking of these norms is used to generate shock and dramatic intensity.