YOU SAID:

my party is going to be killing my friends if they come (not kinding) i am

INTO JAPANESE

もし彼らが来たら私のパーティーは友達を殺す

BACK INTO ENGLISH

If they come, my party will kill my friends.

INTO JAPANESE

もし彼らが来たら、私のパーティーは私の友人を殺すでしょう。

BACK INTO ENGLISH

If they come, my party will kill my friend.

INTO JAPANESE

もし彼らが来たら、私のパーティーは私の友人を殺すでしょう。

BACK INTO ENGLISH

If they come, my party will kill my friend.