The battle against Haruna and Kirishima begins with the I-401 drawing them to a trap they set at the ruins of the old Yokosuka city, which fails to damage the enemies but allows them to circle around them undetected and launch a surprise attack using the now sunk Japanese battleship Mikasa as a decoy. However, Kirishima prevents being hit in the nick of time and launches a barrage of warheads at them, which they barely manage to avoid. To finish the I-401 for good, Haruna and Kirishima combine together to generate a huge gap in the water and trap it into the line of fire of their Super Gravity Cannon, but just before firing at Iona, they leave themselves vulnerable to her last Erosion Torpedo concealed inside Mikasa's wreckage that triggers a chain reaction destroying both ships, although Haruna's mental model manages to salvage Kirishima's core and escape. In the next day, a child finds the unconscious Haruna inside an abandoned warehouse.
Elenco: Kazuyuki Okitsu , Mai Fuchigami , Minami Tsuda , Shinobu Matsumoto , Eiji Miyashita , Nao Touyama , Saki Fujita , Manami Numakura , Atsushi Ono , Hibiku Yamamura , MAKO (Mako Sakura) , Nozomi Yamamoto , Rina Hidaka , Ryotaro Okiayu , Sayuri Hara , Yukana , Yumi Uchiyama , Jouji Nakata .