SEOUL (THE KOREA HERALD/ASIA NEWS NETWORK) - The second season of hit medical drama series Hospital Playlist got off to a good start on Thursday (June 17), recording the highest first-episode viewership rating in the history of South Korea's tvN network.

Thursday night's episode recorded an average viewership rating of 10 per cent, according to Nielsen ratings, making it the first tvN drama series to chart double-digit ratings on day one, as it reached as high as 12.4 per cent at its peak.

The TV drama, written by Lee Woo-jung and directed by Shin Won-ho, centres on the five doctors from the previous season, depicting their daily lives and hectic hospital routines as well as their friendship.

The bond among the five main characters, Lee Ik-joon (Cho Jung-seok), Ahn Jeong-won (Yoo Yeon-seok), Kim Jun-wan (Jung Kyoung-ho), Yang Seok-hyeong (Kim Dae-myung) and Chae Song-hwa (Jeon Mi-do), seemed to have become stronger in the second season's first episode, with stories of patients and their families at the crossroads of life and death touching the hearts of viewers.

Thursday's episode also explored the romantic relationships among the characters, hinting at a season with love in the air and, perhaps, heartaches.

The 12-episode first season aired from March through the end of May last year, a recording peak viewership rating of 14 per cent.

A notable feature of the drama is the conclusion of each episode coming with a performance of an all-time favourite Korean pop tune by the five doctors, who have formed a band.

Thursday's episode ended with the band performing The Rain And You, a song originally released in 2006 as part of the soundtrack for the hit film Radio Star.

Hospital Playlist 2 premiered on Netflix on Thursday, with new episodes every week.