Hello everyone. In this arcticle I want to share you my favorite underrated kpop songs. I want to add that I am mostly listen popular groups so this is more like underrated popular kpop group songs :D Some of them are single but some of them are not. And this is my opinion of course. I hope you guys will like it :)
EPIK HIGH

-> Amor Fati (A beautiful song. Duet with Kim Jongwan. With his smooth vocals, song became better. Here's the fanmade music video https://www.youtube.com/watch?v=oVHKDCn6fjk )
-> Born Hater (Defination of swag. Duet with iKon's Bobby & B.I, Winner's Mino, Beenznio and Verbal Jint. Here's the music video https://www.youtube.com/watch?v=3s1jaFDrp5M)
-> Up (Duet with Park Bom. Very hype and good song. Bom's vocals are so good in this. Here's the music video https://www.youtube.com/watch?v=9EIYWmRkeRE)
-> Kill This Love (I found this song on YG's game and I seriously fell in love with it. It's just so so so so good.)
-> Can You Hear My Heart (Moon Lovers OST. Duet with Lee Hi. One word. Amazing.)
B.A.P

-> Now (Jongup's solo. He has amazing vocals so this song is also amazing.)
-> I Guess I Need You (I absolutely adore this song. It's more than beautiful. I don't know how to describe it.)
SEVENTEEN

-> I Don't Know (Defination of beauty. It's just so good.)
-> Simple (Woozi's solo song. Very beautiful and also emotional.)
-> Shining Diamond (Performance team's song. Hype. Can make you dance.)
-> Fronting (Different from SVT's style but very good song.)
BLOCK B

-> Be The Light (Sad but beautiful. Here's the music video https://www.youtube.com/watch?v=E4yzhCIZulM)
(I am not listening them too much but rest of their songs are good too. Check them out.)
VIXX

-> Love Me Do (Cool. Vixx's all songs are cool actually but this one is very cool :D)
(I am not listening them too much but rest of their songs are good too. Check them out.)
EXID

-> Boy (I love love love love... this song.)
(I am not listening them too much but rest of their songs are good too. Check them out.)
LEE HI

-> Breathe (Well this song is not that underrated but I wanted to add because this beauiful song needs some attention. Here's the video https://www.youtube.com/watch?v=5iSlfF8TQ9k)
-> Hold My Hand (Very cute song with very cute video ft. cutie pie. Here's the video https://www.youtube.com/watch?v=cuUEnho33so)
(Check her other songs and covers too. Her voice is so beautiful to be underrated.)
2NE1

-> If I Were You (2NE1 is not that underrated but this song is. This is my favorite song from them and never failed to make me cry.)
BTOB

-> Someday (Another beautiful slow song. More than good)
(They are so cute and their songs are very good. Check them.)
LUNA

->Honey Bee (Duet with Mamamoo's Solar and EXID's Hani. Complation of strong vocals. Hype. Here's the video https://www.youtube.com/watch?v=fvYtzE3clCw)
SISTAR

-> One More Day (This is my favorite song from them. I especially love it's music video. Here it is https://www.youtube.com/watch?v=E4TygUpWUTQ)
FTISLAND

-> Take Me Now (If you like rock songs, you'll like this one too. Here's the music video https://www.youtube.com/watch?v=WsC0jG1M5jA)
-> Severly (Rock + heartbreak = masterpiece. Here's the music video https://www.youtube.com/watch?v=argLR4dfoYk)
(If you like rock songs, check them out. They have amazingly beautifull songs)
NCT U

-> Without U (NCT U's vocals' song. Very beautiful. Here's the music video https://www.youtube.com/watch?v=y6OcvS54KYQ)
PLEDIS GIRLZ

-> Sickness (Duet with Seventeen's Vernon. Never failed to amaze me.)
24K

-> Still 24K (They are talented rookie group. This song is very hype. Here's the video https://www.youtube.com/watch?v=WPsAtmGofT0)
I.O.I

-> Downpour (Their disbandment song. But just a masterpiece. Here's the music video https://www.youtube.com/watch?v=_AADHVsit4A)
ONF

(I couldn't find their gif)
-> On/Off (They debuted like a month ago and this is their debut song. Please support them. Here's the video https://www.youtube.com/watch?v=RQlMI0n10VY)
iKON

-> WYD (I don't know why this song is so underrated. It has a beautiful video and vibe. Here's the video https://www.youtube.com/watch?v=hth1VQNPtj0)
WINNER

-> Color Ring (One of thir debut songs and my favorite song from them. Sad but very very very beautiful song. Here's the video https://www.youtube.com/watch?v=vQIfXg7UukI)
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The list finished there. You can listen all songs from this playlist https://open.spotify.com/user/melisa%C4%9F/playlist/4qiEDQJ6tzcBq5ByCz7eHQ
I want to talk about another group too. They doesn't have a spotify account so they are not on the list.
DAY6

They are the cutiepies. They are a rock band and have beautiful songs. You can especially check this songs.
-> Congratulations (Their debut song. Here's the video https://www.youtube.com/watch?v=x3sFsHrUyLQ)
-> Colors (My favorite song from them. Here's a lyrics video https://www.youtube.com/watch?v=MAwitOFffqw)
-> I Wait (Like an anime opening. Here's the music video https://www.youtube.com/watch?v=O3nFopIjmjI)
-> You Were Beautiful (Heartbreaking love song. Here's the music video https://www.youtube.com/watch?v=BS7tz2rAOSA)
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I hope all of you guys enjoyed. Thank you for reading^^