NMIXX are very hit or miss for me, but KNOW ABOUT ME is fine. It's fine. It's just fine. That's fine. It's aggressively fine.
I'm not drawn to that mellow R'n'B style, I'll admit. I prefer when it picks up towards the end, but for a song that's not even 3min long (😒) it's really not a great bang for my buck.
The video is pretty nice however (although it's the second video this month set in a terminal, after GENBLUE's ACT LIKE THAT).