It's Okay To Not Be Okay OST by Heize & Sam Kim

"Jang Da-hye (Korean: 장다혜; born August 9, 1991), better known by her stage name Heize, is a South Korean singer, rapper, songwriter and composer signed to Stone Music Entertainment. After making her debut in 2014 with the EP Heize, she gained attention after appearing on the second season of South Korean reality show Unpretty Rapstar." (Wiki)

At the time of this post, Episode 3 has aired for ITS OKAY TO NOT BE OKAY on tvN and Netflix (FEATURES on POPCORNX), and two of the shows OST has since been identified and revealed, with the above featured “You’re Cold” by Heize (더 많이 사랑한 쪽이 아프대 by 헤이즈), while shown below is “Breath” by Sam Kim (숨 by 샘김).

And while the MV for both songs is online, it does/did not actually show-up on this blog, so instead I've posted fanmade (translated) lyric-videos instead.

"Sam Kim (Korean: 샘김; born February 19, 1998) is a Korean–American singer-songwriter and guitarist. He is signed under Antenna Music, having finished as the runner-up of the talent show K-pop Star 3. He made his official debut on April 10, 2016, on K-pop Star 5." (Wiki)

Initially I’d felt that if I’d understood the lyrics more, perhaps I’d able to speculate on WHICH song is specifically meant to be WHOSE main theme … but somehow I feel both is “interchangeable”, for the lives of Kim Soo-hyun's caretaker "Moon Kang-tae", and Seo Ye-ji's celebrated children's book author "Ko Moon-young" ... and perhaps will read into it more in a later stage, was I'm pretty content to cruise along and discover both characters as they are presented weekly :)

Featured below is Heize's track again, with edited scenes of both leads in the KDRAMA.