…lovely pix you can find by just googling for “Se Hun” and “EXO-K” (Se Hun (see post below) being a member of a Korean pop band called EXO-K)
I don’t know exactly who is who in those pix but I certainly like what I see.
Update: I’m adding the information given by a connaiesseur of the scene via comments. Thank you very much for that!
There’s 12 boys in EXO, divided in half. EXO-K promotes in Korea, EXO-M aims at the Chinese market. Names are given from the left:
Sehun, Lu Han (EXO-M)
Sehun, Kai, Suho
upper row — Chanyeol, Kai, Suho, Sehun; lower row — Baekhyun, D.O.