YOU SAID:

I swear I just have to hit him like really hard

INTO JAPANESE

私は本当に激しく彼を殴らなければならないことを誓います

BACK INTO ENGLISH

I swear I have to hit him really hard

INTO JAPANESE

私は彼を本当に激しく殴らなければならないことを誓います

BACK INTO ENGLISH

I swear I have to hit him really hard