YOU SAID:

Will you come back again?

INTO JAPANESE

また戻ってきませんか。

BACK INTO ENGLISH

Would you like to come back again?

INTO JAPANESE

また戻って来ませんか?

BACK INTO ENGLISH

Why don't you come back again?

INTO JAPANESE

もう一度戻ってきませんか。

BACK INTO ENGLISH

Why don't you come back again?