(In the main Azur Lane base...) Enterprise: "Phew...that was a tough mission." Belfast: "Indeed. Purifier is no joke." Kitakaze: "I would have never thought a Siren like that would be so tough to take down. Thank goodness the Dragon Empery helped out." Bismarck: "Hey! I helped, too!" Enterprise: "Of course, Bismarck. Your firepower was invaluable in bringing down Purifier." Belfast: "Indeed, your assistance was greatly appreciated, Bismarck. Your versatility and strength made a significant impact in the battle." Kitakaze: "Yeah, yeah, we know, Bismarck. You did your part. Don't get too cocky now." Bismarck: "Hmph, I'm just stating the truth. I deserve some credit too, after all-" (The sound of a loud crash resonates through the base.) Belfast: "What the devil?" Enterprise: "Everyone, stay alert! Something's going on!" (They rush towards the source of the crash and find a destroyed storage room. Smoke fills the air, hindering their vision.) Enterprise: "Who could have caused this? And why?" Belfast: "Let's investigate. Be cautious, everyone." (They cautiously step into the smoke-filled room, their weapons at the ready. As the smoke begins to clear, they spot a figure lurking in the shadows.) Enterprise: "Identify yourself! What are you doing here?" (The figure steps forward, revealing themselves to be another shipgirl.) ???: "Hello again, Bismarck. I still remember what the Iron Blood did to me and the rest of the Northern Parliament during World War II." Bismarck: "Avrora..." Belfast: "Bismarck, you know this shipgirl?" Bismarck: "...during the Second World War, me and the rest of the Iron Blood betrayed the Northern Parliament, our former allies. We attacked them, causing great damage and loss. Avrora here was one of the victims of that betrayal." Avrora: "Indeed. I once fought alongside Bismarck, believing in the strength of our union against the Sirens. But she turned her back on us, and we suffered greatly as a result." Enterprise: "Bismarck, is this true? Did you betray your former allies?" Bismarck: "Yes, it is true. I made a decision that I still regret to this day. I was blinded by the promises of power and victory that the Sirens offered, and I abandoned the Northern Parliament." Kitakaze: "So that's why Avrora is here. She seeks revenge."