YOU SAID:

i once was king of the underground

INTO JAPANESE

私はかつて地下の王でした

BACK INTO ENGLISH

I was once an underground king

INTO JAPANESE

私はかつて地下王でした

BACK INTO ENGLISH

I used to be an underground king

INTO JAPANESE

私はかつて地下の王でした

BACK INTO ENGLISH

I was once an underground king

INTO JAPANESE

私はかつて地下王でした

BACK INTO ENGLISH

I used to be an underground king