YOU SAID:
Hello i am the best person in the world ever to exist
INTO JAPANESE
こんにちは、私は世界で最高の存在です
BACK INTO ENGLISH
Hello, I am the best in the world
INTO JAPANESE
こんにちは、私は世界一です
BACK INTO ENGLISH
Hello, I am the best in the world
That didn't even make that much sense in English.