이건 내가

this is something I...

→ 이것+은
phrase Uncommon #11,438
this is something I... 이건 means “this,” and 내가 means “I” as the subject. The phrase is usually followed by a verb or noun and means that the speaker is doing, wanting, liking, or being identified with something related to “this.”
KO: 이건 내가 선택한 책이야.
EN: This is the book I chose.

이건 내가 끝내야 해.

I have to finish this.

— 발레리나 (2025)

그리고 이건 내가 버려 줄게

And… I’ll throw this away for you.

— 프레디의 피자가게 2 (2025)

이건 내가 아니라고 당연하지

Of course that's not me.

— 퍼펙트 블루 (1998)

이건 내가 일 이야

This is my job.

— 이탈자 (1990)