YOU SAID:

He had to do with the bad thing, the thing that would ruin everything.

INTO JAPANESE

彼は悪いこと、すべてを台無しにすることをしなければなりませんでした。

BACK INTO ENGLISH

He had to do the bad, ruin everything.

INTO JAPANESE

彼は悪いことをしなければならず、すべてを台無しにしました。

BACK INTO ENGLISH

He had to do bad things and ruined everything.

INTO JAPANESE

彼は悪いことをしなければならず、すべてを台無しにしました。

BACK INTO ENGLISH

He had to do bad things and ruined everything.