YOU SAID:

I'm dead on the inside

INTO JAPANESE

私は内側で死んでいます。

BACK INTO ENGLISH

I was dead inside.

INTO JAPANESE

中亡くなりましたが。

BACK INTO ENGLISH

Inside died.

INTO JAPANESE

中に死亡しました。

BACK INTO ENGLISH

Inside were killed.

INTO JAPANESE

内部殺されました。

BACK INTO ENGLISH

Inside were killed.