거로군

I see; so it was

→ 것
phrase Rare #24,966
I see; so it was A conversational sentence ending expressing realization or confirmation, often translated as “I see” or “so...” It is a contraction of 것 + 이로군 and can sound somewhat old-fashioned or literary.
KO: 아, 네가 그 소문을 들은 거로군.
EN: Ah, so you heard the rumor.

그건 설리먼 선생이 보낸 거 로군

So that must have been sent by Dr. Sullivan.

— 하울의 움직이는 성 (2004)

그래서 자네는 떠나는 거 로군.

So you're leaving.

— 다운폴 (2004)