YOU SAID:
I want to be the very best, in the world you've ever seen
INTO JAPANESE
私は今まで見たことのない世界で最高になりたいです。
BACK INTO ENGLISH
I want to be the best in the world I have not seen before.
INTO JAPANESE
私は今まで見たことがない世界で最高になりたいです。
BACK INTO ENGLISH
I would like to be the best in the world I have not seen before.
INTO JAPANESE
今まで見たことのない世界で最高になりたいです。
BACK INTO ENGLISH
I want to be the best in the world I have not seen before.
INTO JAPANESE
私は今まで見たことがない世界で最高になりたいです。
BACK INTO ENGLISH
I would like to be the best in the world I have not seen before.
INTO JAPANESE
今まで見たことのない世界で最高になりたいです。
it is unlikely that this phrase will ever reach equilibrium