YOU SAID:

We're leaving for the party later tonight.

INTO JAPANESE

今晩、パーティーに向けて出発します。

BACK INTO ENGLISH

I'm leaving for the party tonight.

INTO JAPANESE

私は今夜のパーティーに向けて出発します。

BACK INTO ENGLISH

I am leaving for tonight's party.

INTO JAPANESE

今夜のパーティーに向けて出発します。

BACK INTO ENGLISH

Depart for the party tonight.

INTO JAPANESE

今夜のパーティーに向けて出発します。

BACK INTO ENGLISH

Depart for the party tonight.