Black Butler: Book of the Atlantic
黒執事 Book of the Atlantic (original)
Starring Daisuke Ono, Maaya Sakamoto, Yukari Tamura, Junichi Suwabe, Jun Fukuyama, KENN, Noriaki Sugiyama
It's a action & adventure and animation movie, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Italy.