해주마

will do (for you)

→ 해주다
auxiliary · informal, future tense Rare #22,489
will do (for you) An old-fashioned, forceful way to say “I will”; it often sounds dramatic or threatening.
KO: 오늘은 내가 네 일을 해주마.
EN: I’ll do your work for you today.
Conjugation of 해주다
Optative future
해주마

다신 네 가족을 못 보게 해주마

I'll make sure you never see your family again.

— 스파이더맨: 뉴 유니버스 (2018)

다신 건드리지 못하게 해주마

I'll make sure you can never touch it again.

— 반지의 제왕: 왕의 귀환 (2003)