편은

as for …’s side

→ 편
phrase Rare #24,363
as for …’s side 편 means “side” or “party,” and 은 marks it as the topic. The exact meaning depends on context.
KO: 민수 편은 누구야?
EN: Who’s on Minsu’s side?

파라미르 편은 그만 들어라

Stop taking Paramir’s side.

— 반지의 제왕: 두 개의 탑 (2002)

편은 무슨!

What's the side!

— 저수지의 개들 (1992)