Beautiful Days () is a 2001 South Korean television drama series starring Lee Byung-hun, Choi Ji-woo, Ryu Si-won and Lee Jung-hyun. The drama is the first entry in director Lee Jang-soo's Heaven Trilogy which includes Stairways to Heaven in 2003 and Tree of Heaven in 2006. It aired on SBS from March 14 to May 31, 2001 on Wednesdays and Thursdays at 21:55 for 24 episodes. Synopsis Similar to its drama contemporaries, Beautiful Days involves conflicts in family relationships, as well as a love triangle. Lee Min-chul (Lee Byung-hun) returns from studying in the US, to take an active role in his father's prospering music business, Victory Records. It turns out that his father (Lee Jung-gil) was involved in unethical practices in the past, as well as the murder of the father of Min-chul's stepbrother, Sun-jae (Ryu Si-won). Into the scene comes two girls from the orphanage, Yeon-soo (Choi Ji-woo) and Se-na (Lee Jung-hyun), who share a sisterly bond. Se-na gets inspired to become a pop star after a visit by the Victory Records boss on a charity event. Years pass, and both girls arrive in Seoul to start their adult lives. However, they get separated. Yeon-soo finds a job working at Victory Records in hopes of one day meeting Se-na again and becomes involved in the lives of the stepbrothers, Min-chul and Sun-jae. Yeon-soo and Min-chul make a deal that they will help each other's siblings. Yeon-soo moves into Min-chul's family home as a tutor for his younger sister Min-ji (Shin Min-a), and Min-chul will help Se-na achieve her dream of becoming a singer. A complex drama unfolds, Min-chul and Sun-jae both fall for Yeon-soo. Yeon-soo chooses Min-chul, but their love is threatened by a terminal illness. Cast Main Lee Byung-hun as Lee Min-chul Baek Sung-hyun as young Lee Min-chul Choi Ji-woo as Kim Yeon-soo Ryu Si-won as Lee Sun-jae - Min-chul's stepbrother Lee Jung-hyun as Kim Se-na - Yeon-soo's sister Supporting Shin Min-a as Lee Min-ji - Min-chul's sister Lee Yoo-jin as Kang Na-rae - Yeon-soo's roommate and co-worker Lee Jung-gil as Lee Sung-chun - Min-chul's father Lee Kyung-jin as Jung Myung-ja - Sun-jae's mother Ha Jae-young as Lee Young-jun - Sun-jae's father Lee Sang-woo as Oh Jung-hun - composer and Sun-jae's high school upperclassman Kim Dong-hyun as Min Kyu-suk - bodyguard/chauffeur Lee Hwi-hyang as Yang Mi-mi / Yang Kyung-hee - singer Lee Ae-jung as Shin Jae-eun Kim