History ShoutOut / BlueArchive

** Koharu's EX Skill has her throw a Holy Hand Grenade, just like the (less mystical) one.

* Kaede plays a card game called Mushiqueen. It is a parody of ''VideoGame/KouchuuOujaMushiking'' and ''Franchise/YuGiOh''.
* In the Japanese version, Pina's Exclusive Weapon is named "Gunfight Without Honor and Humanity" (''仁義なき撃ち合い''). This is a reference to a Japanese movie series, ''Film/BattlesWithoutHonorAndHumanity'' (''仁義なき戦い''), which features lots of ''yakuza''.
* When you pick up Michiru in the unit formation screen, Michiru says "Domo, Sensei=dono. My name is Michiru" (''ドーモ、センセイ＝ドノ、ミチルです''). It is a reference to ''LightNovel/NinjaSlayer''.

** In Episode 8 of ''A Revolutionary Ivan Kupala'' event, Minori says this line.

* During Shimiko's first relationship story, she smashes an obnoxious patron's head with the corner of a book. It is a parody of the ''{{Manga/Berserk}}''.
* Koharu's EX Skill throws the Holy Hand Grenade. It is a reference to ''Film/MontyPythonAndTheHolyGrail''.
* Some of Kirino's relationship story titles remind police fiction.
** Relaxed Shakedown, which reminds Japanese police drama ''Series/BaysideShakedown''.
** Gunfire and Zirconia, which reminds Japanese video game ''VideoGame/JuuseiToDiamond'' (銃声とダイヤモンド, "Diamond and The Sound of a Gunshot").
* Volume 4 is titled Rabbit of Caerbannog. It is a reference to ''Film/MontyPythonAndTheHolyGrail''.
* [=V2C1=] Episode 7 is titled Much Too Big to Be Called a Gun. It is a reference to ''{{Manga/Berserk}}''.
* In [=V4C1=] Episode 8, Saki mentions "some legendary agent who would hide under boxes and barrels to pull off impossible infiltration missions." It is a clear reference to ''VideoGame/MetalGear''.
* The end of the Foreclosure Task Force sub-story is a ''WebVideo/HitlerRants'' parody.
* Public Safety Bureau sub-story is titled ''Manga/YoureUnderArrest''.
* When Hare uses EX Skill, she sometimes quotes ''VideoGame/HalfLife1'', especially lines that became memes in Korea due to bad voice acting. Creator/{{Nexon}} did this localization, so It can be a sort of CompanyCrossReferences.

* In the Japanese version, Pina's Exclusive Weapon is named "Gunfight Without Honor and Humanity" (''仁義なき撃ち合い''). This reminds movie ''Film/BattlesWithoutHonorAndHumanity'' (''仁義なき戦い'').

** In Episode 4 of ''The Clumsy Sister and the Magician of the Old Library'' event, Natsu says this line.

--> Hibiki: "What if I had more time and a bigger budget...? No, that's just an amateur's excuse.

* When Hare uses EX Skill, she sometimes quotes ''VideoGame/HalfLife'', especially lines that became memes in Korea due to bad voice acting. Creator/{{Nexon}} did this localization, so It can be a sort of CompanyCrossReferences.

* In the cafe, Hibiki quotes ''Montana Jones''' Dr. Nitro and denies that quote.

** Relaxed Shakedown, which reminds Japanese police drama ''Bayside Shakedown''.
** Gunfire and Zirconia, which reminds Japanese video game ''Juusei to Diamond'' (銃声とダイヤモンド, "Diamond and The Sound of a Gunshot").

* When Hare uses EX Skill, she sometimes quotes ''VideoGame/HalfLife'', especially lines that became memes in Korea due to bad voice acting. Creator/{{Nexon}} did this localization, so It can be CompanyCrossReferences.

* When Hare uses EX Skill, she sometimes quotes ''VideoGame/HalfLife'', especially lines that became memes in Korea due to bad voice acting. Creator/Nexon did this localization, so It can be CompanyCrossReferences.

* Public Safety Bureau sub-story is titled ''Manga/YoureUnderArrest''.

* [=V2C1=] Episode 7 is titled [[Manga/{{Berserk}} Much Too Big to Be Called a Gun]]. It is a reference to ''{{Manga/Berserk}}''.

* Volume 4 is titled Rabbit of Caerbannog. It is a reference to ''Film/MontyPythonAndTheHolyGrail''
* [=V2C1=] Episode 7 is titled [[Manga/{{Berserk}} Much Too Big to Be Called a Gun]]. It is a reference to ''{{Manga/Berserk}}''
* In [=V4C1=] Episode 8, Saki mentions some legendary agent who would hide under boxes and barrels to pull off impossible infiltration missions. It is a clear reference to ''VideoGame/MetalGear''.

* Public Safety Bureau sub-story is titled ''Manga/YoureUnderArrest''

* Koharu's EX Skill throws the [[Film/MontyPythonAndTheHolyGrail Holy Hand Grenade]].

* Volume 4 is titled [[Film/MontyPythonAndTheHolyGrail Rabbit of Caerbannog]].
* [=V2C1=] Episode 7 is titled [[Manga/{{Berserk}} Much Too Big to Be Called a Gun]].
* In [=V4C1=] Episode 8, Saki mentions [[VideoGame/MetalGear some legendary agent who would hide under boxes and barrels to pull off impossible infiltration missions]].
* The end of the Foreclosure Task Force sub-story is a WebVideo/HitlerRants parody.

* During Shimiko's first relationship story, she smashes an obnoxious patron's head with the corner of a book. It is a parody of the {{Manga/Berserk}}.

* Volume 4 is titled ''[[Film/MontyPythonAndTheHolyGrail Rabbit of Caerbannog]]''.
* [=V2C1=] Episode 7 is titled ''[[Manga/{{Berserk}} Much Too Big to Be Called a Gun]]''.

* During Shimiko's first relationship story, she smashes an obnoxious patron's head with the corner of a book. It is a parody of the Manga/Berserk.

* V2C1 Episode 7 is titled ''[[Manga/Berserk Much Too Big to Be Called a Gun]]''.
* In V4C1 Episode 8, Saki mentions [[VideoGame/MetalGear some legendary agent who would hide under boxes and barrels to pull off impossible infiltration missions]].

* Public Safety Bureau sub-story is titled 'Manga/YoureUnderArrest'

* During Shimiko's first relationship story, she smashes an obnoxious patron's head with the corner of a book. It is a parody of the ''Manga/Berserk''.

** In Episode 4 of ''The Clumsy Sister and the Magician of the Old Library'' event, Natsu says this line.

** In Episode 8 of A Revolutionary Ivan Kupala event, Minori says this line.
** In Episode 4 of The Clumsy Sister and the Magician of the Old Library event, Natsu says this line.

* When you pick up Michiru in the unit formation screen, Michiru says "Domo, Sensei=dono. My name is Michiru" (''ドーモ、センセイ＝ドノ、ミチルです''). It is a reference to ''LightNovel/NinjaSlayer''.

* Kaede plays a card game called Mushiqueen. It is a parody of ''VideoGame/KouchuuOujaMushiking''.

* When you pick up Michiru in the unit formation screen, Michiru says "Domo, Sensei=dono. My name is Michiru" (ドーモ、センセイ＝ドノ、ミチルです). It is a reference to ''LightNovel/NinjaSlayer''.

* When you pick up Michiru in the unit formation screen, Michiru says "Domo, Sensei=dono. My name is Michiru." It is a reference to ''LightNovel/NinjaSlayer''.

* In the Japanese version, Pina's Exclusive Weapon is named "Gunfight Without Honor and Humanity" (''仁義なき撃ち合い''). This reminds movie ''Film/BattlesWithoutHonorAndHumanity'' (''仁義なき戦い'').

* In the Japanese version, Pina's Exclusive Weapon is named "Battles Without Honor and Humanity" (''仁義なき撃ち合い''). This reminds movie ''Film/BattlesWithoutHonorAndHumanity'' (''仁義なき戦い'').

* Kaede plays a card game called Mushiqueen. It is a shoutout to ''VideoGame/KouchuuOujaMushiking''.
* In the Japanese version, Pina's Exclusive Weapon is named ''仁義なき撃ち合い''("Battles Without Honor and Humanity"). This reminds movie ''Film/BattlesWithoutHonorAndHumanity'' (仁義なき戦い).

* In the Japanese version, Pina's Exclusive Weapon is named ''仁義なき撃ち合い''("Battles Without Honor and Humanity"). This reminds movie ''Film/BattlesWithoutHonorAndHumanity''.

* Kaede plays a card game called Mushiqueen. It is a shoutout to ''VideoGame/KouchuuOujaMushiking''.

* Kaede plays a card game called Mushiqueen. It is a shoutout to [[VideoGame/KouchuuOujaMushiking]].