올 테니

I'll come, so...

→ 오다
phrase Rare #13,530
I'll come, so... Used to express the speaker's intention or expectation that they will come, usually followed by a request or instruction. 올 is the future form of 오다, and 테니 means “since” or “because.”
KO: 내가 곧 올 테니 여기서 기다려.
EN: I'll be back soon, so wait here.

동료가 올 테니 여기 서 기다려요

My colleague is coming, so please wait here.

— 빅토리아 (2015)

가지고 올 테니 기다려요

Wait here—I’ll go get some money.

— 타락천사 (1995)

바로 올 테니

I'll be right back.

— 벌집의 정령 (1973)

내가 갔다 올 테니 차에서 기다려

I'll go and be right back, so wait in the car.

— 달콤한 인생 (1960)