It's times of Azur Lane, old Azur Lane. The same thing as ever, the fight against the Sirens was exhausting, the shipgirls were already getting tired of that war and tired of the front lines. While the shipgirls of the front lines were suffering to maintain their positions, the people on the rear, to be more specific, the people on land were enjoying their moments of battle exercises for future service or their vacation time. Among them, a lone Atlanta-class cruiser enjoyed his life out of the front lines. The last thing that he wanted was to make part of the conflict actively. Reckless, arrogant, stubborn, and not very well educated, USS Flint was living how he always wanted to, everything easy and simple for him. Well, After feeling betrayed. Until one day, one day, everything was about to change, and Flint was clueless about what would happen to him from that point beyond...

◇Some of the arts presented by this fanfiction aren't mine, this fanfiction only has the goal of entertaining people with the story showed in here◇ ---- Right before the disruption of the Sakura Empire and Iron Blood from Azur Lane, one of the Sakura Empire submarines was sent on a mission, alone, that anyone would think that it's Impossible, but this submarine didn't think so... The I-400 Submarine heard these exact words from the Shrine Maiden, Nagato: "Submarine Carrier I-400, you have the orders to sail around the globe to exterminate every enemy ship you see. As things are going now, it might seems that Azur Lane and Iron Blood will disrupt our alliance with each other, for now you will be restricted to only sink Siren Ships, from there on, await new orders from me, my sister, Amagi, Akagi or Kaga. Understood?" "Yes. Understood, My Lady."