YOU SAID:

will my father ever come back?

INTO JAPANESE

父はいつか戻ってくるのだろうか?

BACK INTO ENGLISH

Will my father come back one day?

INTO JAPANESE

父はいつか帰ってくるの?

BACK INTO ENGLISH

Will my father come back someday?

INTO JAPANESE

父はいつか帰ってきますか?

BACK INTO ENGLISH

Will my father come back someday?