Ep. 6: Haruna protects Makie with Kirishima's aid while Iona arrives and Takao awakens.
Aired on November 12, 2013

Following Toujuurou’s death, Haruna enlists Kirishima to safeguard Makie from military forces. She employs nanomachines to create a decoy, diverting attention while Kirishima escapes with Makie. Soldiers uncover the ruse and pursue Makie, who is distressed by her weapon’s destructive potential. Cornered, Haruna calls for assistance, and Iona responds. Meanwhile, Gunzou informs Kamikage that the I-401 crew was hired solely to deliver a vibration warhead to the US and will act independently. After the army withdraws, Iona transports the trio to the submarine. Haruna asks Makie to become their friend, and she agrees. As the I-401 heads to Iwo Jima, Takao wakes in a room where a mysterious voice questions her intentions.
Episodes
- Ep. 2 · Gunzou faces Takao while navigating toward Yokosuka with his new command
- Ep. 3 · I-401 arrives at Yokosuka to retrieve a secret warhead amid political pressure and sudden attacks
- Ep. 4 · I-401 Evades Yokosuka Assault by Kirishima and Haruna
- Ep. 5 · Haruna and Kirishima investigate Makie Osakabe and the Vibration Warhead at Iwo Jima
- Ep. 6 · Haruna protects Makie with Kirishima's aid while Iona arrives and Takao awakens.
- Ep. 7 · The I-401 crew reaches Iwo Jima base where Hyuga and Takao await their return
- Ep. 8 · Hyuga negotiates with Kongou's decoy while Gunzou prepares to deliver a vibration torpedo to the United States.
- Ep. 9 · Hyuga and Takao defend against Kongou while Iona and the crew execute a complex escape plan.
- Ep. 10 · Iona sacrifices her mental model to save Gunzou while Kongou is relieved of duty.