Whose book is this?
It's her book.
Who is this?
She is Nami.
What is this?
It is Chopper.
Who do you go with?
I go with him.
Who do you go with?
I go with them.
Who are these?
We are Ruffy and Ace.
Who are these?
They are Linlin and Kaido.
Who do you go with?
I go with her.
Whose book is this?
It's our book.
What's your name?
I'm Ruffy.
Whose book is this?
It's their book.
Who is this?
He is Zoro.
Whose book is this?
It's my book.
Whose book is this?
It's his book.