Während Geschosse auf Iwo Jima herabregnen, arbeiten die Mental Models zusammen, um dem Angriff der ersten östlichen Patrouillenflotte des Nebels standzuhalten. Mit ihrer Hilfe gelingt es I-401, durch die Blockade zu brechen, aber Kongou ist ihnen dicht auf den Versen.
Hyuga stays behind deflecting the attacks of Kongou's fleet to buy time for Iona and the others to escape. Before leaving Iwo Jima, Gunzō asks for Takao's help and she agrees to join his side. Unwilling to listen to Hyuga's words, Kongou fires her Super Gravity Cannon at her but fails to destroy her and taking advantage of her getting exausted, orders Maya to fires her own cannon but Takao appears in the nick of time to block Maya's shot. Believing that Hyuga and Takao are just covering the I-401's escape, Kongou tracks her down and gives chase, refusing to slow down even after falling into a minefield left by Hyuga to help Iona escape. Iona tries to reason with Kongou with no success and when the battleship attempts to fire her Super Gravity Cannon underwater to sink her, Hyuga manages to hack into Kongou's systems to have her lose control for time enough to Iona and Gunzō to escape. Takao then reveals to Kongou that instead of Takao, the true decoy was Iona herself, while the vibration warhead, Makie, her friends and the rest of the I-401's crew were safely hidden aboard her and she returns to pick up Hyuga to rendevous with Iona and Gunzō, who despite escaping from Kongou's grasp, are ambushed by I-400 and I-402 and apparently sunk by them.
Le dialogue avec Kongô n'a pas porté les fruits espérés par Gunzô et l'affrontement semble inévitable. Alors que le port d'attache d'Iona est cerné par la flotte de la Brume, les différents navires encore capables de se battre vont se serrer les coudes pour faire face au terrible navire amiral et à la joyeuse Maya. Gunzô et son équipage vont-ils pouvoir sauvegarder le dernier espoir de l'humanité ?
硫黄島に降り注ぐ、ミサイルの雨。コンゴウ率いる霧の東洋方面艦隊による猛攻を、メンタルモデルたちが力を合わせて凌ぐ。ヒュウガはイオナへの愛のため。ハルナ、キリシマは蒔絵を守るため。そしてタカオもまた、群像への愛を覚え、イ４０１を逃がすため、闘いに参じる。メンタルモデルたちの協力を得て４０１は包囲網を突破するが、追いすがるコンゴウの手が４０１に伸びる！
既然金刚炮火相向，千早等人也不能无动于衷，于是，决定放弃硫磺岛进入撤退作战。高雄加入苍蓝钢舰后，就赶赴前线与日向一起抵挡摩耶的攻击，与此同时，千早和伊欧娜则暗中逃脱，遗憾的是金刚看破了高雄和日向的佯攻战略，直接潜入海中与401正面交锋，就在她准备发出超重力炮时，日向的黑客攻击使其瘫痪，帮助401躲过致命一击，千早本以为一切就此结束，可没想到再遇袭击……
estancias en Hyuga detrás de desviar los ataques de la flota de Kongō a ganar tiempo para Iona y los otros a escapar. Antes de salir de Iwo Jima, Gunzo pide la ayuda de Takao y ella está de acuerdo en unirse a su lado. No dispuesto a escuchar las palabras de Hyuga, Kongō dispara su Super Gravity Cannon en ella, pero no destruirla y órdenes Maya para disparar su propio cañón en el agotado Hyuga pero Takao aparece en el último momento para bloquear el disparo de Maya.
