It looks like sexy concept but it actually not fully sexy (maybe)
I heard that the concept is more into mystery/thriller.

As you know, Sexy concept with showing skin is very trending among now-a-days kpop girls group.
If SNSD also comeback with that concept, it may still be interesting but wont be that special.
So one thing I'm sure is SNSD will be back with more surprising and interesting concept than just "SEXY" -.-
proving that SNSD isn't just ordinary girlgroup. They could be different and not gonna disappoint fans.

Ooh Im so excited!!

Nope, it doesn't even look like a sexy concept to me. More like a mysterious and classy rather than sexy.

nah i think it's going to be dark and creepy

^Agree with Nacchie

But I think sort of sexy nurses like, I heard they'll be doctors.

sort of

Maybe

i guess...