YOU SAID:

My enemies will rue the day they ever crossed me.

INTO JAPANESE

私の敵は、彼らはこれまで私を越えた日を悔やむでしょう。

BACK INTO ENGLISH

Enemy of my enemy is they regret more than I ever will.

INTO JAPANESE

敵の敵は、彼らを今までにするより後悔です。

BACK INTO ENGLISH

Enemy of my enemy is the regret they ever more.

INTO JAPANESE

私の敵の敵は残念なことに、彼らはこれまで以上。

BACK INTO ENGLISH

The enemy of my enemy is, unfortunately, they're more than ever.

INTO JAPANESE

私の敵の敵は、残念なことに、彼らはこれまで以上。

BACK INTO ENGLISH

The enemy of my enemy is, unfortunately, they're more than ever.