Gi Yun is a clever and good-looking chairman of WJ Entertainment. He is a rich romanticist of the century who seems perfect on the outside, but he is also an ambitious man with a dark secret that he cannot tell others. His wife, Shin Ju Kyung, was able to rise from poverty by marrying Gi Yun, just like Cinderella from the fairytale. She is a perfect mother and a lovely wife with a great career until an unexpected incident steals everything away from her. Jung Woo Hyuk, a rookie actor at NA Entertainment who continues his acting career after overcoming the misery of his incompetent agency, misses his mentor, Ju Kyung, who suddenly disappeared. At the moment, Seo Hee Jae, who looks just like Ju Kyung, walks into NA Entertainment. Woo Hyuk gets confused when he sees Hee Jae, and she intentionally approaches Gi Yun. Who destroyed her life, and how will she get back the perfect life she lost?

Kim Yeon Doo (Lee Eun Jae), a model student, unexpectedly encounters Ji Hyun Joo (Kang Yul), a notorious bad boy, during a desperate attempt to avoid a boy from her past. Initially skeptical of Hyun Joo's true nature, Yeon Doo gradually discovers his softer side as they grow closer. Their budding romance faces a challenge when baseball prodigy Choi Seung Hyun (Lee Jung Joon) enters the picture, competing for Yeon Doo's affection and testing the strength of her relationship with Hyun Joo. As they navigate high school drama and prepare for college, the couple must confront new challenges and potential obstacles in their relationship. Adapted from the mobile dating simulation game "Best Mistake" by Day7, this is a 2021 South Korean romantic comedy drama produced by WHYNOT media.

Kim Yeon Do (Lee Eun Jae), a studious high school girl, accidentally sparks a relationship with Ji Hyun Ho (Kang Yul), a popular but unserious boy, after posting another boy's picture to deter a persistent suitor. Their budding romance is challenged when Choi Seung Hyun (Lee Jung Joon), a baseball ace, arrives and shows interest in Yeon Do, causing Ji Hyun Ho to become jealous. As their relationship faces this new tension, their classmates also begin to explore romantic connections. Based on a 2016 mobile game, this is a 2021 South Korean movie directed by Lee Yoo Yeon that explores the complexities of young love and high school relationships.

Kim Yeon Do (Lee Eun Jae), a studious high school girl, is constantly harassed by a boy from her past. To deter him, she posts a picture of another boy, Ji Hyun Ho (Kang Yul), on her social media. Unexpectedly, Ji Hyun Ho is her schoolmate - a popular but rebellious student who dislikes studying. As news of the post spreads quickly through the school, Yeon Do and Ji Hyun Ho begin to have multiple encounters that gradually bring them closer together. Their developing relationship creates unexpected complications for their classmates. Based on a hit 2016 mobile game, "Best Mistake 1: The Movie" is a 2021 South Korean movie directed by Lee Yoo Yeon.

Kim Yeon Do (Lee Eun Jae) is a diligent high school student in an unexpected relationship with Ji Hyun Ho (Kang Yul), one of the school's most popular boys. Their seemingly stable romance is challenged when baseball ace Choi Seung Hyun (Lee Jung Joon) arrives and develops feelings for Yeon Do. Ji Hyun Ho becomes suspicious that Yeon Do might reciprocate Seung Hyun's interest, potentially sparking a complicated love triangle. As romantic tensions unfold among their classmates, the potential for romantic complications grows. Based on a 2016 mobile game and serving as a sequel to the 2019 "Best Mistake" series, this is a 2020 South Korean drama series written by Yoon Shi So.

Kim Yeon Do (Lee Eun Jae) is a high school student desperate to discourage a persistent admirer by posting a picture of Ji Hyun Ho (Kang Yul), a popular and wild schoolmate. Her impulsive social media post unexpectedly draws her closer to Ji Hyun Ho, creating tension when her best friend also develops feelings for him. As their unexpected connection unfolds, Yeon Do navigates the complicated dynamics of high school relationships and personal boundaries. This drama, based on a 2016 mobile story game of the same name, explores the unpredictable nature of teenage emotions and social interactions. "Best Mistake" is a 2019 South Korean drama series that delves into the complexities of young love and friendship.

Won Tak (Lee Minhyuk), Min Joo (Baek Seo Yi), Eun Kyung (Woohee), Chang Kyung (Kwon Young Min), Se Joon (Kang Yool), and Se Ra (Han So Eun) were childhood friends who shared everything. Inseparable throughout their youth, they remained close until college. A decade later, long-buried secrets begin to surface, exposing a complex network of hidden emotions and unresolved relationships. As their seemingly perfect friendship unravels, they discover that even the most intimate friendships can conceal profound mysteries. The group must confront the truths they've kept hidden, challenging their understanding of trust and loyalty. This is a 2018 South Korean drama directed by Park Gi Hyeon and Park Seon Jae.