YOU SAID:

I killed everyone at this party.Not him,me

INTO JAPANESE

私はこのパーティーで全員が死亡しました。ない彼は、私

BACK INTO ENGLISH

I killed everyone at this party. He is me.

INTO JAPANESE

私はこのパーティーで全員が死亡しました。彼は私です。

BACK INTO ENGLISH

I killed everyone at this party. He is me.