YOU SAID:
Fin once said the end.
INTO JAPANESE
フィンはかつて終わりを告げた。
BACK INTO ENGLISH
Finn once came to an end.
INTO JAPANESE
フィンは一度終わりを迎えました。
BACK INTO ENGLISH
Finn came to an end once.
INTO JAPANESE
フィンは一度終わりました。
BACK INTO ENGLISH
The fins are finished once.
INTO JAPANESE
フィンは一度仕上げます。
BACK INTO ENGLISH
Finish the fins once.
INTO JAPANESE
フィンを一度仕上げます。
BACK INTO ENGLISH
Finish the fins once.
That didn't even make that much sense in English.