YOU SAID:

Whoever is alone will stay alone,

INTO JAPANESE

一人でいる人は一人でいて

BACK INTO ENGLISH

The person who is alone is alone

INTO JAPANESE

一人でいる人は一人です

BACK INTO ENGLISH

One person is alone

INTO JAPANESE

一人は一人です

BACK INTO ENGLISH

One is one

INTO JAPANESE

1つは1つです

BACK INTO ENGLISH

One is one