Episode 16 S00 E16

Kazuyuki Okitsu (as Gunzou Chihaya (Main Character)) Mai Fuchigami (as Iona (Main Character)) Minami Tsuda (as Iori Watanuki (Main Character)) Shinobu Matsumoto (as Sou Oribe) Eiji Miyashita (as Kyohei Kashihara) Nao Toyama (as Shizuka Hazumi) Saki Fujita (as Hyouga) Manami Numakura (as Takao) Atsushi Ono (as Ryokan Kita) Hibiku Yamamura (as Haruna) MAKO (as Maya) Nozomi Yamamoto (as I-402) Rina Hidaka (as I-400) Ryotaro Okiayu (as Kamikage Ryuujirou) Sayuri Hara (as Makie Osakabe) Yukana (as Kongou) Yumi Uchiyama (as Kirishima) Jouji Nakata (as Narration)

submarine based on manga trade embargo naval warfare blockade anime war