비밀은

as for the secret

→ 비밀
phrase Rare #15,522
as for the secret 비밀 means “secret,” and 은 marks it as the topic of the sentence. Depending on context, it can also be translated simply as “the secret.”
KO: 비밀은 꼭 지켜줄게.
EN: I'll definitely keep the secret.

하지만 비밀은 지켜주세요

But please keep it a secret.

— 세 얼간이 (2009)

비밀은 충분히 들은 것 같습니다

I think I've heard enough secrets.

— 콘클라베 (2024)