YOU SAID:

i am the best person who has stepped into this planet

INTO JAPANESE

私はこの惑星に足を踏み入れた最高の人です

BACK INTO ENGLISH

I'm the best person to set foot on this planet.

INTO JAPANESE

私はこの惑星に足を踏み入れたのに最適な人です。

BACK INTO ENGLISH

I'm the perfect person to set foot on this planet.

INTO JAPANESE

私はこの惑星に足を踏み入るのに最適な人です。

BACK INTO ENGLISH

I am the perfect person to step into this planet.

INTO JAPANESE

私はこの惑星に足を踏み入れるのに最適な人です。

BACK INTO ENGLISH

I am the perfect person to step into this planet.