You and I - Kim Jong Wan of NELL (Weightlifting Fairy)
Words My Eyes Say - Tei (Healer)
To You - Sung Si Kyung (Reply 1994)
Confession - DeliSpice (Reply 1997)
Where Are U - Jung Joon Young (W)
Star - Kang Min Hyuk (Heartstrings)
Even If I Die, It's You - BTS V and Jin (Hwarang) (I haven't watched Hwarang though. Hehe)
I have SO many but these are the ones I love; I can listen to them every day.