YOU SAID:

A hero need not speak,when he is gone the word will speak for him

INTO JAPANESE

主人公は話す必要はありません、彼がいなくなったとき、言葉は彼のために話します

BACK INTO ENGLISH

The protagonist doesn't have to speak, words speak for him when he's gone

INTO JAPANESE

主人公は話す必要はありません、彼が去ったときに言葉が彼のために話します

BACK INTO ENGLISH

The protagonist doesn't have to speak, the words speak for him when he leaves

INTO JAPANESE

主人公は話す必要はありません、彼が去るとき、言葉は彼のために話します

BACK INTO ENGLISH

The protagonist doesn't have to speak, the words speak for him when he leaves