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Fanfic / Chronicles of the Siren War

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It is the year 1941, and the world is unraveling.

Former submariner Commander Andrew Thorson has just been reassigned by the Office of Strategic Services to work as part of the Eagle Union's KANSEN program.

Unfortunately, just as he walks out of Admiral Hawkins' office, the Sakura Empire begin their surprise attack on the Pearl Harbor naval base, catching everyone off-guard and destroying many Eagle Union ships.


Following Admiral Hawkins' final order before he perished, Thorson escapes with a KANSEN, the USS Laffey, and the Wisdom Cubes of the battleship USS Arizona.

Sailing towards a set of unknown coordinates, what will he find there? What will he do next?

Chronicles ofthe Siren War is an Azur Lane fanfiction written by Reddit user /u/SabatonBabylon. The story follows our inexperienced commander as he fights to stop the Crimson Axis and their mysterious allies, the Sirens.

See also: HEL Jumper, by the same author.


The fic contains the following tropes:

  • Adaptational Expansion: Chronicles of the Siren War puts a lot more emphasis on the story elements that make up the video game such as the development of the characters, the time and resources taken to start a campaign, and the various uses of Wisdom Cubes.
  • Adaptational Personality Change: This version of Ark Royal is rewritten from Super Comedic Lolicon to a loving, caring Parental Substitute for the younger Kansen.
  • Adaptational Superpower Change: The Kansen initially don't possess the riggings of their game counterparts, using solely their mental connection with the actual ships to control them. It becomes a Subverted Trope as Thorson's Kansen learn to acquire their riggings by taking Wisdom Shards into their spines and then swearing fealty to Thorson.
  • Affectionate Nickname: Pennsylvania is either named Penny (by Thorson and fellow Kansen) or Valkyrie, a special one given by Thorson after he noticed her beauty and prowess in battle.
  • Alternate History: Given the setting, this is inevitable:
    • In both the real-life history and the game, Arizona was sunk and became too damaged to be refloated and rebuilt; here she is brought Back from the Dead thanks to her salvaged Wisdom Cubes.
    • Cleveland is already in service with the Navy, even taking part in the Battle of the Java Sea, whereas she was commissioned sometime after Midway.
    • HMS Jupiter and USS Houston both survive Java Sea instead of being sunk by the Sakura Fleet.
    • The Battle of the Java Sea as whole. What was a a real-life Curb-Stomp Battle in favor of the Japanese, ends with less losses for the Union, Royal, and Australian Navy and more Sakura losses in the form of prisoners and defectors.
    • In both the real-life history and the game version of the Battle for the Coral Sea, Lexington actually perished; here, Azur Lane is able to save her from that fate.
    • At the Battle of Midway, it wasn't Yorktown that perished; Hornet did.
  • An Arm and a Leg: Downes and Cassin's first appearance has them in a really bad state following Pearl Harbor, with them missing several of their limbs. Thankfully, they get better.
  • Bad Boss: Akagi and Kaga prove throughout the story their complete disregard for their subordinates. In the Battle of the Java Sea, Kaga attempts to sacrifice Jintsuu and her fleet to gain a victory. She was especially intent on ending Yuudachi after the latter pushed her Berserk Button.
    • Admiral Hawkins is implied to have been one to Tennessee, judging from her moment with Thorson in Chapter 28 after the Siren aircraft battle where she, mistaking him for Hawkins, expects to hear him call her a "useless weapon".
  • Because You Were Nice to Me: It's 100% clear that the Kansen aren't drawn to the Commander because of his looks, skills, or position; in truth, it is just his one big heart saving them from their own factions' heartlessness. It's for THAT reason the Kansen are willing to face the might of the Eagle Union for him.
  • Bedmate Reveal: After being enraptured by Thorson's kindness, Laffey sneaks into his room and sleeps there. When Thorson wakes up, he sees Laffey in only her underwear sleepily pressing herself against his chest, but she's genuinely happy. Ever since then, this becomes a habit for her.
    • Laffey even convinces Akashi to do the same (underwear-only part included).
  • The Bad Guy Wins: Sakura Empire actually WON the Battle of Midway and ALL FOUR of their aircraft carrier Kansen survive it. The only reason they hadn't claimed Midway yet nor eliminate the rest of the Yorktown sisters(Hornet was killed after the battle) was because Azur Lane arrived to push them back.
  • Big Damn Heroes:
    • Just as the USS Demeter is about to be destroyed by the Sakura ships, the USS Laffey swoops in and picks off the enemy pursuers one by one.
    • Thorson's fleet arrives at Coral Sea just in time to stop Zuikaku and Shoukaku from decisively winning the battle.
    • Azur Lane once more saves Eagle Union from a losing battle during the Battle of Midway.
  • Blood Oath: Vampire enacts this with Thorson to cement her loyalty towards him. If there is the possibility that she had to choose between her country and him, she will immediately choose the latter.
  • Bodyguard Babes: While most of the Kansen technically count as Thorson's protectors, South Dakota plays this straight.
  • Came Back Wrong: Subverted Trope. At first, Arizona seemingly couldn't handle the process of her resurrection- that is, until Thorson figures out that she's still reliving her final moments, which leads him to injure her at the exact wound she received to help her realize that she's safe now.
  • Canine Companion: Admiral Wags, Admiral Sherman's Cocker Spaniel and mascot of the USS Lexington. Akashi, who has catlike traits, is naturally not pleased to see him.
  • Chess Motifs: Quite a few:
    • Thorson builds up a reputation as a Knight who "collects and marshals his pawns on a chessboard". It's especially poignant in terms of shogi (Japanese chess), where captured enemy pieces can reenter the board as allies.
    • This exchange between Warspite and Thorson in Chapter 34:
      "How many knights are there on a side, Commander?"
      Thorson knew immediately who Warspite considered to be the second knight: herself. "Two."
  • Chick Magnet: After spending time with Commander Thorson, so many of the Kansen have become attracted to him. This is actually beneficial in many ways, not only in growing and/or improving bonds and teamwork but also helping the shipgirls unlock their latent potentials which Thorson was assigned to do.
  • Civil War: The Sakura Empire has a serious internal conflict, fought between two opposing sides: one is led by Akagi and Kaga who supports the alliance with the Sirens, while the other is comprised of loyalists to the old traditions and the Sakura gods.
  • Commanding Coolness: Thorson, after being promoted to the rank by Admiral Hawkins. The Kansen refer to him as such, however they have their own variations of the title related to how they would refer to a commanding officer in their respective nations:
    • "Commander (Eagle Union)"
    • "Shikikan (Sakura Empire)"
    • "Knight Commander (Royal Navy)"
    • "Kommandant (Iron Blood)"
  • Curb-Stomp Battle: Sakura Empire, during the initial stages of the Battle of Midway.
  • Cute Ghost Girl: Shiranui. The reason for this is that in this story Akagi murdered her for opposing the alliance with the Sirens, but Akashi managed to retrieve her friend's body after she became a ghost through her own willpower.
  • Cuteness Proximity: Pennsylvania and Arizona are instantly drawn to Yuudachi and Yukikaze much to the latter two's, mostly Yukikaze's dismay.
    • Just about every Kansen fell in love for the Manjuu.
  • Death Is Cheap: Largely downplayed. The only known way to revive a dead Kansen requires her Wisdom Cube to be purple, but the exact methods to make that occur are a complete mystery. If that doesn't happen, they are Killed Off for Real.
  • Defeat Equals Friendship: Thorson's main method in recruiting Kansen to his side.
    Thorson: I'm not asking you to go easy on them in battle. I'm asking you to beat them into submission to the point that they realize the folly of their ways.
  • Deliberate Values Dissonance: Given that the story takes place in World War II, racism is prevalent. Thorson of all people has a mild case of this, given his reaction towards South Dakota and Fredrick Miles; the former bears the appearance of a Native American, while the latter is African.
  • Demonic Possession: Laffey came close to being taken over by the Red Wisdom Cube. Thankfully, her mental link with Thorson allows her to break free and absorb the cube into herself, resulting in her "Retrofit- Annihilation Mode".
  • Didn't Think This Through: Akashi's plan to get away from Akagi and Kaga is to hide out in the abandoned Azur Lane base... which produced all Kansen who would have knowledge of its location. Whoops! Thankfully, it also allowed her to meet Thorson.
  • Died in Your Arms Tonight: Arizona passes away in Thorson's arms as he cries for her to stay alive. Ends up a subversion: because Arizona witnesses Thorson trying desperately to save her, she undergoes the condition that allows for her resurrection.
  • Disintegrator Ray: Laffey's Retro-fitted ship possesses plasma-based weaponry that can annihilate a row of ships in one shot.
  • Dramatic Irony: Akagi is eager to destroy the Azur Lane forces at Midway; in real-life history, the Battle of Midway was a decisive victory for the American forces. So, Akagi is about to enter a world of hurt.
  • Dreaming of Things to Come: Yamashiro gets a vision of her eventual death at the hands of the US Navy some two years later Subverted, as this is a vision from an Alternate History (specifically ours).
    • Implied to have been done to other Sakura Shipgirls by Akagi so that they stay loyal
  • Dude, Where's My Respect?: Let's list down all of Azur Lane's accomplishments: they hold out a lot longer than most naval forces during wartime, salvage costly missions, and make major progress on the KANSEN technology. Even with all that said, Eagle Union high command doesn't think highly of Azur Lane other than being a convenient "dumping ground" for their so-called obsolete and useless ships.
  • Due to the Dead: After Nachi was killed during one of their raids, Azur Lane has the girl's Wisdom Cube buried at their base. After a shrine was built, her Cube was excavated and placed there.
    • Later, the skull of Vampire's lover and the Wisdom Cubes of Nevada and Oklahoma are placed at the shrine as well.
  • Eagleland: While not villains in the story, most of Eagle Union's actions are unforgivable without doubt which put themselves in opposition against Azur Lane. Said actions include the cruel treatment Laffey endured; their abandoment of Oklahoma, Downes, and Cassin to die; and their discarding of the Big Seven when they were no longer needed.
  • Easter Special: Chapter 53 has everyone in Azur Lane join in on the holiday.
  • Embarrassing Nickname: Tennessee gets "Belle" as a nickname by Downes, much to her dismay; it's based after both the Southern Belle and Tennessee possibly being dead last to sleep with Thorson.
  • End of an Era: Brooklyn explains to Thorson what everyone in the world is thinking: the age of dreadnoughts will be over and the aircraft carriers will take their place. Thorson counters this, stating that Azur Lane will change that current mentality.
  • Explosive Leash: Akagi and Kaga have gotten wise to the recent desertions, so they had their forces implanted with Red Wisdom Shards that will kill them should it happens again. There are two ways to get rid of it: ripping out the Red Wisdom Shard manually, or having the affected Kansen swear loyalty to someone else.
  • Evolution Power-Up: Whenever a Kansen gets Retrofitted.
  • Fantastic Racism: It's clear that most of the navy of the Eagle Union have varied forms of dislike against the Kansen. Some of the Kansen have these same feelings towards humanity. That all changes once Azur Lane takes part in the war and the Union's view on them slowly takes a more positive turn.
    • Zig Zagged Trope for the Royal Navy who had HMS Queen Elizabeth be in charge of their KANSEN naval forces. However, it's implied that while the Royal Navy is not as harsh as the Union, the relationship between them is just as much distant.
  • Fire-Forged Friends: Do recall that Azur Lane is comprised of members of the various factions, many of whom are defectors from the enemy Crimson Axis; obviously there's going to be a lot of distrust and infighting within the group. But as the story progresses, they realize they are Not So Different and start forming friendships with each other, thus turning this Ragtag Bunch of Misfits to a fully effective fighting force.
  • Foil:
    • Commander Andrew Thorson serves this to Akagi and Kaga. All three are leaders of their respective factions; however, Thorson is a Benevolent Boss and invites Shipgirls to join his ranks regardless of affiliations, whereas Akagi and Kaga are Bad Bosses who will discard any of their subordinates to remain in power.
    • Rear Admiral Spruance plays this for Commander Thorson. They are both from Eagle Union and that's where the similarities end: Spruance spends chapter 54 insulting everyone yet expects the Kansen to follow him out of blind obedience, whereas Thorson appreciates his Kansen and truly considers their feelings and thoughts first and foremost before taking any action.
  • Food as Bribe: Shiratsuyu convinces Yuudachi to defect from the Sakura Empire with meat ribs.
  • For Science!: Thorson learns, to his horror, that the Iron Blood has been conducting several hazardous and immoral experiments onto their Kansen that can be accurately described as borderline torture. Thankfully, this does not last.
  • Godzilla Threshold: Once Akagi and Kaga are made aware of Azur Lane's ability to raise dead Kansen, they realize that the organization will be a bigger threat compared to the likes of Enterprise and are desperate to snuff them out before they grow too powerful.
    • The two Sakura Kansen made good on that as they assemble their forces to attack the Azur Lane island facility at the same time they are mounting their assault on Midway. As Eagle Union's Admiral Nimitz accurately puts it:
      Admiral Nimitz: An enemy so feared they would treat him with the same importance as Midway.
  • Good Old Fisticuffs: Tennessee and Downes drop their riggings and enter hand-to-hand combat against Jintsuu and Naka, much to the latter pair's surprise.
  • Good People Have Good Sex: So far, Thorson has made love with Cleveland, Pennsylvania, Arizona, Fusou, Yamashiro, and Downes.
  • Greater-Scope Villain: The Creator is the being that all Sirens serve and the reason the Sakura Empire has been divided.
  • Hates Being Alone: Laffey develops a serious fear of being alone after the constant rejections by her superiors and crewmates and being separated from her closest friends. It got so bad that she constantly guzzles down bourbon to forget it all. This fear also drives Laffey to be extremely clingy to Thorson and push herself to the very limit in order to be useful to him.
  • Historical Domain Character: Azur Lane meets Rear Admiral Doorman at Surabaya. During the Battle of the Java Sea, he valiantly has his fleet sail into Jintsuu's trap to give Azur Lane a chance to stop the Sakura Fleet's advance.
  • Hot Springs Episode: The entirety of Chapter 49.
  • Interspecies Romance: As the war progresses, Thorson develops an attraction for several of his Kansen, and vice versa. Soon, other humans start to form bonds with their shipgirls as well.
  • I See Dead People: Thorson, Shiranui, and Kasumi can see spirit fire while everyone else don't see them at all.
  • Island Base: Azur Lane's base of operations. It's also where all the Kansen were created from. However, this is a double-edged sword: while the island has all the resources and materials to sustain Azur Lane's forces, it's also a high-priority target for the Crimson Axis and the Sirens.
  • Killed Off for Real: Nachi, Olkahoma, Nevada, Exeter and Sims.
  • Knighting: Warspite performs the ceremony for Commander Thorson, acknowledging him as her and the Royal Navy's commander.
  • Lampshade Hanging: Once in a while, Thorson questions the very idea of Kansen and the entire situation he's in.
  • Let's You and Him Fight: In reflection of how both the Eagle Union and the Sakura Empire have wronged them, Tennessee proposes to Thorson to have Azur Lane stay out of the war and let the two factions duke it out, after which they'll pick up the pieces. Obviously, the Commander doesn't entertain the idea but does understand her stance.
  • Loophole Abuse: Azur Lane is ordered by Eagle Union High Command to not take part in the war effort and remain stationary until further instructions are given, much to the former's frustrations. However, everything else is perfectly fine, meaning that if let's say that they are doing their training exercises somewhere around Java and in the likelihood they are to encounter an enemy fleet nearby, they are obliged to defend themselves so it's not exactly taking part in the war.
  • Mexican Standoff: Azur Lane and Eagle Union engages this when the latter group attempts to forcibly take several of their friends.
  • Mistreatment-Induced Betrayal:
    • Several of the Sakura Empire Kansen join Azur Lane after Akagi and Kaga tried to have them killed.
    • This is revealed to have happened with the Iron Blood Kriegsmarine who willingly joined the Sirens after taking care of Iron Blood Naval High Command.
  • Mistaken for Pedophile: A Running Gag in the series. To Thorson's dismay, some people think he has a thing for younger Kansen.
  • Ms. Fanservice:
    • All Kansen fit the bill. The concept initially gets deconstructed: the Kansen don't like being ogled at nor being ordered for sexual pleasures, and their appearances are probably the reason they are not treated as equals. This then gets reconstructed: some of the Kansen use their positions to boost the morale of their fellow soldiers, and thanks to Azur Lane giving the Kansen more active roles in World War II, the world now sees them as heroes.
    • Thorson previously criticized the Sirens' looks, later theorizing that they chose those forms to mess with humanity's head.
  • The Multiverse: Exists as a byproduct of Siren Interference and confirmed when Yamashiro had a vision of her and her sister's defeat at the Battle of Surigao Strait some two years later
  • Nice Job Fixing It, Villain!: Had Pearl Harbor not been attacked, Admiral Hawkins (who is implied to be more loyal to Eagle Union) would have ensured that Azur Lane be under his nation's control and be heavily regulated. However Sakura Empire did attacked, leaving the only one survivor who is far more willing to bend the rules and being isolated from Eagle Union allowed him and his allies in advancing the Kansen technology to heights never seen before.
  • Offscreen Romance: The last time Brooklyn was seen, she was escorting Captain Stevens as part of a mission; when she returns to Azur Lane, it's revealed she and Stevens became a couple.
  • Oh, Crap!:
    • Witnessing Arizona's resurrection causes Kirishima to immediately return to the Sanctuary to report this to her masters.
    • The fact that Akagi and Kaga know what happens in the future is a very big Oh, Crap! moment
    • Jintsuu's fleet is horrified when they witness the full power of Laffey's "Annihilation Mode".
    • Kaga reveals to Akagi that she was horrified when she saw the power that Tennessee and Downes possessed and realized how Azur Lane will only become more powerful in the future. This leads her to want Azur Lane be taken down as soon as possible.
  • Ominous Cube: Wisdom Cubes, the source of life for all Kansen. Thanks to Adaptational Expansion, they can serve in a multitude of ways:
    • Wisdom Shards produce a Kansen's riggings via absorption. They can also create the Bulins and dummy ships.
    • Absorbing a pure Wisdom Cube will allow both body regeneration and the materialization of a new ship.
    • Absorbing a Wisdom Cube belonging to a different Kansen causes the bearer to undergo the "Retrofit" process.
    • A Red Wisdom Shard works as a Tracking Device and Explosive Leash.
    • Purple Wisdom Cubes allow a Kansen's resurrection from death.
  • Origins Episode: Chapters 12 and 45 reveal how the Bulins and Manjuu respectively came to be.
  • Polyamory: A solution Thorson's love interests come up with. Although reluctant at first, the Commander comes around to accepting it.
  • Powered Armor: The riggings are a more efficient method in allowing the Kansen to control their boats. They also provide them the ability to skate on water.
  • Power Tattoo: This is what happens whenever a Kansen absorbs Wisdom Shards into her chest and gains her riggings. Their marks are located at the back of the neck.
  • Pragmatic Hero: One of the reasons Thorson takes in Sakura Empire and Iron Blood Kansen as prisoners of war rather than eliminating them is the possibility of gaining military intelligence as well as bolstering Azur Lane's forces since their organization is still young, having neither the resources nor the manpower to stay independent. However, he does make it clear that he does care for their well-being and will come to their aid regardless.
  • Psychic Link: A Kansen establishes this with their Commander, and the link improves their own performance. When this happens, both the Kansen and the Commander share everything, including thoughts, feelings, and memories.
  • Reality Ensues: Sending young Kansen like Mutsuki, Kisaragi, and Mikazuki to fight in a war is a terrible idea. Despite being made for war, these three are still just children, both body and mind. Obviously, they would immediately run the moment something fires upon them. Not only that, they could get lost and stumble into enemy territory in the worst-case scenario.
    • Because of this, the three are ordered to remain on land for their own safety.
  • "The Reason You Suck" Speech:
    • Tennessee, of all people, chews out Pennsylvania, Arizona, Fusou, and Yamashiro (plus anyone else who wants to screw Thorson) for not even considering how Thorson feels about his Unwanted Harem situation even after he has done so much to help them, especially since they would be no different from the people who devalued them.
    • Fusou clashes with Jintsuu and chews the latter out for letting her devotion to Akagi and Kaga blind her to the harms they have committed that not only towards their enemies but also towards their loved ones.
  • Reduced to Dust: Aside from leaving behind their Wisdom Cube, this is what happens when a Kansen gets killed.
  • Related in the Adaptation: For lack of a better term, the Bulin are "genetically" related to Akashi who used herself and the conductive matrix to create them.
  • Roaring Rampage of Revenge: After learning about Arizona's death, Pennsylvania fires all her cannons into the incoming Sakura aircraft. However, she was so reckless in what she is doing that her crew abandons her out of fear.
  • Screw This, I'm Outta Here!: After witnessing Eagle Union's cold disregard of the heavily injured Kansen resulting in Oklahoma's death, it leaves little shock and wonder why Pennsylvania and Tennessee rebelled, took the remaining injured, and bolted away without looking back.
  • Ship Tease:
    • Houston and Miles are getting very close to each other.
    • Downes and Ooshio have shown they are getting closer beyond normal friendship.
  • Shut Up, Hannibal!: In an Offscreen Moment of Awesome, after a Siren offers her a Deal with the Devil, HMS Queen Elizabeth's response was to drape herself in the Union Jack (the national flag) and throw her tea at them, choosing to fight and die for her country rather than turn her back on it.
  • Small Role, Big Impact: Nagato and her closest aides have yet to appear in the story proper, but her disappearance is one of the primary factors for the Sakura Empire division between those that want to ally with the Sirens and those that oppose.
  • Snark-to-Snark Combat: More or less the accurate description of the relationship between Shiranui and Thorson (or "Idiot Shikikan", Shiranui's favorite words).
  • Spanner in the Works: Having snuck into the Azur Lane base, Kirishima stole all of their Wisdom Cubes, hoping to stall their attempts in resurrecting any more Kansen.
    • Azur Lane becomes this to Akagi and Kaga's plan in manipulating the time stream.
  • Spontaneous Weapon Creation: Akashi explains to Thorson that Carrier-type Kansen can summon aircraft as long as she knows the inner workings of the craft. This inspires Thorson to have Langley teach Ark Royal so that they can gain an advantage against the Crimson Axis.
  • Stripperific: Thorson lampshades how most of the Kansen are scantily clad, which goes against the military dress code and will draw unnecessary attention. He asks Brooklyn about this, and she answers that she was born with them and she's honestly most comfortable wearing them.
  • Suicide Attack: At the Battle of Midway, many Eagle Union pilots attempt to run their aircrafts at the Sakura Carrier Kansen, particularly Akagi, to take them out.
  • Technopath: Each and every Kansen can control their ships including sailing them and firing the weapons. They can also somehow reload the ammo without physically touching them, though the process can work faster if there is a crew present to provide assistance.
  • The Masquerade: The existence of the Kansen has been highly classified, done so by the Eagle Union naval forces and the higher-ups of the military. It's such a top secret that even the other armed forces aren't aware about it.
  • Theme Music Power-Up: Two variations were invoked, both sang by Cleveland. First was "1812 Overture", and after that was the US National Anthem, "Star-Spangled Banner". The latter was soon sang by all of the Eagle Union Kansen who are so inspired that they decimated nearly all of the invading Sirens.
  • This Cannot Be!: Tester is genuinely shocked that someone other than herself and her kind can utilize the full power of their technology.
  • Token Human: Out of everyone from Azur Lane, Andrew Thorson is the only human in the organization; this is a Justified Trope as he was part of the KANSEN program and the only one left that knew about it since the rest had been killed at Pearl Harbor.
    • Later, Fredrick Miles is added to the group, placed there by Thorson and Stevens.
  • Tragic Keepsake: Vampire's lover didn't survive the Battle at Ceylon. By the time she got to him, all that remained of him were his skull and dog tags.
  • Unresolved Sexual Tension: Thorson and Tennessee's interactions with each other are akin to "cats and dogs", but there is no doubt there is some attraction between the two. This culminates in the last scene of Chapter 34 where he kisses her, followed by her threatening to kill him if he tells anyone about her kissing him right back.
  • Unseen No More: Before Enterprise had yet to appear, her actions become a target of interest for Azur Lane and an eyesore to the pro-Siren faction of the Sakura Empire. She finally appears in Chapter 54.
  • Uriah Gambit: Kaga sends the rebellious Zuikakau and Shoukaku to support the invasion of New Guinea in hopes they'll get killed in the crossfire. It doesn't work; they have almost handily beat the Eagle Union carriers when Thorson shows up, and still escape largely unscathed.
  • Violently Protective Girlfriend: Let this be a lesson: if you ever point a gun at the Kansen's beloved Commander, then they'll point their cannons at you.
  • War Is Hell: The first two chapters centering on the infamous Pearl Harbor incident demonstrate this perfectly well.
  • We ARE Struggling Together: Thorson worries that this might happen after approving Warspite and himself to be co-leaders. His thoughts are proven right when Warspite orders her Royal Navy to eliminate Z23 while he wants her alive, leading to him ordering Azur Lane to shoot their allies on sight if they ever get close to their target.
  • We Hardly Knew Ye: Admiral Hawkins, almost immediately after introducing Thorson to the KANSEN program, is mortally wounded in the attack on Pearl Harbor. He barely manages to give Thorson his final orders and his dog tags (which are later revealed to be hiding the geographic coordinates to the abandoned Azur Lane base) before dying.
  • Wham Episode:
    • Chapter 25 has Arizona finally Back from the Dead.
    • Chapter 42 has Azur Lane confronting Kaga for the first time during a huge battle, which ends in the Sakura Empire's victory and Azur Lane's retreat.
    • Chapter 54 is where Thorson and the Kansen stand up and defy the Eagle Union, resulting in Azur Lane's transformation to an independent party. Azur Lane now heads out to New Guinea, which will ultimately lead to the Battle of Midway.
    • Chapter 55 had the Battle of the Coral Sea, and while not as bad as real life, Shoukaku and Zuikaku escape, while Sims was sunk, her sister Hammann is distraught, Lexington crippled but later restored and Yorktown badly damaged.
    • Chapter 56 starts out innocently enough but then Yamashiro gets a vision of herself sinking in a battle in an alternate timeline 2 years from now, furthermore this means that Akagi and Kaga know about their futures and are changing the outcome of battles like Midway, Philippines Sea, and Leyte Gulf to THEIR favor as well as prevent the sinking of ships where they sunk in real life
    • On Chapter 57, Eagle Union code breakers succeed in obtaining the Sakura Empire's battle plans. Akagi and Kaga are carrying out two assaults: one for Midway and the other, Azur Lane.
    • Chapter 61; The good news is that Yorktown and Hammann have survived the Battle of Midway but the bad news is that Hornet is the one that gets killed and even worse news is that all four Sakura Kansen have survived the battle and are heading out to finish off Azur Lane.
  • What Measure Is a Non-Human?: With the exception of the Royal Navy, the Kansen are solely seen as weapons of war or property, depending on the faction. See Eagle Land, Fantastic Racism, and For Science!.
  • What the Hell, Hero?:
    • Warspite gets an earful of this from the entire Azur Lane group for attacking them while trying to kill Z23.
    • Thorson's is a Downplayed Trope. Brooklyn is just surprised about her Commander's Fantastic Racism against Miles. Even Thorson takes notice of this and tries to move past that.
    • When Enterprise pleads to everyone in Azur Lane to work alongside the Eagle Union, this results in her earning their full ire and them calling her out for being blind to what the Eagle Union has put each and every one of them through. If Enterprise hadn't left, they would have most definitely shot her.
  • Worthy Opponent: The Sirens refer to Azur Lane, particularly Thorson, as such.
  • You Are in Command Now: With the death of Admiral Hawkins, Thorson is now the one in charge of the Eagle Union's KANSEN program.
  • You Can't Fight Fate: Kaga theorises that because of their tampering with the time stream, their destinies may have only changed the setting where they had sunk; from Midway to Azur Lane.
  • You Have Got to Be Kidding Me!: Commander Thorson's reaction when he sees that one of the Kansen of Eagle Union is similar in appearance to an adolescent.
  • Zerg Rush: A common method used by Aircraft Carriers and the Sakura has uses this method very effectively in their major battles since they can produce nigh-infinite amounts of planes to add to their forces.

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