Mugiwara - Straw Hat.
Mugiwara Kaizoku - Straw Hat Pirates.
Mugiwara no Rufi - Straw Hat Luffy.
I believe the 'no' in 'Mugiwara no Rufi' is there because that is his title, since 'no' represents possession of something.
Lots of people have watched Pirates of the Caribbean, the exact number is hard to say.
Nazo no okurimono this is mystery gift in Japanese
Emiry.
to say Hannah it's "hannahsan" srry but idk about Montana
低潮 fuuchou