YOU SAID:

i have one really good friend

INTO JAPANESE

私は1人の本当に良い友達がいます

BACK INTO ENGLISH

I have one really good friend

INTO JAPANESE

私は本当にいい友達が一人いる

BACK INTO ENGLISH

I have a really good friend

INTO JAPANESE

私は本当にいい友達がいます

BACK INTO ENGLISH

I have really good friends

INTO JAPANESE

私は本当にいい友達がいます

BACK INTO ENGLISH

I have really good friends