I literally seldom listen to Kpop but as soon as I discovered Sechskies, wow it made me go crazy over with them. I literally searched all of their songs as well as the variety shows they've been into.  The first song was Pom Saeng Pom Sa. Jekki jjang!! 

Sistar due to Sistar19's Mah Boy (forever my fave)

BTS. Dope and Fire were my first MV's but it was DNA that really hooked me

BTS. Although I do listen to a lot of other groups they're still the only one I actually stan. 

My first ever Kpop MV's was SHINee Sherlock and BigBang Fantastic Baby. Since them I was a casual listener it wasn't until I discovered VIXX and then became obsessed with Kpop haha.

My first groups were SNSD with Gee and CN Blue with I'm Sorry. 

SHINee(lucifer), BigBang(fantastic baby) and SNSD(I got a boy) were the first mv's that I saw (if I don't include PSY - gangnam style) they were in a video of I think teens react on youtube after that I was hooked haha and the list of groups became very very long after that.

It was 2NE1. Also have to credit f(x) and Epik High for helping out

THE ROSE

She's in the rain (still gives me goosebumps!)

for me it was ateez and the song was promise