YOU SAID:

hi this is my friend that is my friends friend and this is my party

INTO JAPANESE

こんにちは、これは私の友人である私の友人であり、これは私のパーティーです

BACK INTO ENGLISH

Hi, this is my friend who is my friend and this is my party

INTO JAPANESE

こんにちは、これは私の友人である私の友人であり、これは私のパーティーです

BACK INTO ENGLISH

Hi, this is my friend who is my friend and this is my party