YOU SAID:

forever is ever in forever party

INTO JAPANESE

永遠に永遠に党にいる

BACK INTO ENGLISH

I will be in the party forever and ever

INTO JAPANESE

私はパーティーに永遠に

BACK INTO ENGLISH

I will be in a party forever

INTO JAPANESE

私は永遠にパーティーに参加する

BACK INTO ENGLISH

I will join the party forever

INTO JAPANESE

私は永遠に党に参加する

BACK INTO ENGLISH

I will join the party forever