YOU SAID:

I swear by my katana, I will avenge my father's murder

INTO JAPANESE

私は刀に誓って、父の殺害を復讐する

BACK INTO ENGLISH

I swear on my sword that I will avenge my father's murder.

INTO JAPANESE

私は父の殺害を復讐することを剣にかけて誓います。

BACK INTO ENGLISH

I swear on my sword that I will avenge my father's murder.