YOU SAID:

into the oblivion you should go and never come back

INTO JAPANESE

忘却の中に行って、二度と戻ってこない

BACK INTO ENGLISH

Go into oblivion and never come back

INTO JAPANESE

忘却に入って二度と戻ってこない

BACK INTO ENGLISH

I'll never come back in oblivion.

INTO JAPANESE

私は忘却の中で戻って来ることはありません。

BACK INTO ENGLISH

I will never come back in oblivion.

INTO JAPANESE

私は決して忘却の中に戻ってこない。

BACK INTO ENGLISH

I will never come back in oblivion.