YOU SAID:
Box is my best friend.
INTO JAPANESE
ボックスは私の親友です。
BACK INTO ENGLISH
The box is my best friend.
INTO JAPANESE
この箱は私の親友です。
BACK INTO ENGLISH
This box is my best friend.
INTO JAPANESE
このボックスは私の親友です。
BACK INTO ENGLISH
This box is my best friend.
You should move to Japan!