Guess the OLD Kpop song | Late 2nd to early 3rd generation

Heyo it's me againnn with a new video uwu. In the last days I listened a lot to old kpop songs (reason: my friend) and I decided: hey, if you know so many old songs, why not make a video about it? so here it is lol. Also, I reall need to get a profesional decribtion bc this is not doing it anymore.. But eehh that can wait a bit...
Also istg it is so hard to find a thumbnail for this video so let's just ignore the fact that the song isn't even in the video- but the group is still in it, so it counts, right...?