Update + OST: https://www.youtube.com/playlist?list=PLglB2enYJPojRohYNjGytozeoOs15vt2Z

OST ONLY: https://music.youtube.com/browse/VLPLglB2enYJPoh7RlXZkU5sB6sKbO3CHX24

Since it likely won't be in the official OST playlist, but i find cameo songs just as interesting and the scene was memorable imo: In ep. 4 Seo Ha Jin was dancing to: INFINITE - Be Mine https://open.spotify.com/intl-de/track/3Ase3jvjv2RYIa92MMfu82?si=0c02ae73bd254663

i've uploaded those songs (so far that's not included in the OST) including Be Mine by INFINITE

i have saved all cameo songs (up to ep 4 ) in my playlist :D

 Journalist:

can you share your Spotify list, please?

i havent use spotify before, so i dont know how to create playlist there

 egoms:

Do you know what song is playing in episode 4 ~12-13 minutes, in the secret room?

If you meant, Ju Yeon's secret room, you've somehow found out the "easter egg". That song will be one of the 5 songs in My Dearest Nemesis OST. Riot Kidz and LUCY have released their OST. I suspect this song will be under Pt 3 My Dearest Nemesis (since this song frequently pop up in ep 4, and only song that pop up among the remaining 3 song).

The song is

하성운 - 다시 첫사랑

Ha Sung Woon - First Love Again (Eng Translation - not sure is accurate)

Does anyone know the name of the OST that started playing at minute 45:00 - 46:53 of ep 6?????

 Morango:

Does anyone know the name of the OST that started playing at minute 45:00 - 46:53 of ep 6?????

That one must be Moonrise by Colde (M.D.N. Part 4 OST). The song has been released. Sorry for the late reply.