All of them are advertising Samsung in their pose for the journalist 
They’re going to the US today!!
1. Cute
2. Are their face sizes for real?
3. Oh? That’s an ad??
4. So they’re shooting an ad!!
5. They’re freaking cute and funny ㅋㅋㅋㅋ
6. Ah they’re so transparent ㅋㅋㅋㅋ
7. Freaking funny ㅋㅋㅋㅋ
8. Huh Yunjin’s expression is too cute ㅋㅋㅋㅋ She’s like “Omo~?”
9. Ah Le Sserafim are hilarious ㅋㅋㅋㅋ
10. They’re so funny ㅋㅋㅋㅋㅋ And Yunjin’s expression