Write a dialogue-filled chapter of a interesting, riveting, action-packed, page-turning, and descriptive lengthy action military mystery science high urban cosmic horror space opera fantasy supernatural vampire mecha techno-thriller with elements of an erotic, highly-perverted Lovecraftian romantic high fantasy harem romantic comedy slice-of life mecha monster girl martial arts Japanese light novel Chinese wuxia cultivation style story, as a crossover between the Code Geass anime, video game, manga, and light novel franchise, the obscure Kanokon manga and anime franchise, the Musume Hyakka Jiten [Monster Girl Encyclopedia |Musume Hyakka Jiten|] literature and video game franchise, the Monmusume Kuesto! [Monster Girl Quest! |Monmusume Kuesto!|] video game franchise the IS: Infinite Stratos light novel, manga, anime, and video game franchise, the obscure Omamori Himari anime and manga series, the Handoreddo [Hundred |Handoreddo|] light novel, manga and video game franchise, the Heavy Object light novel, manga and video game franchise, the A Certain Magical Index light novel, manga and anime franchise, the Tenchi Muyo! Ryo-Ohki OVA series, the Evangelion anime, manga, video game, and light novel franchise, the ZETMAN manga and anime franchise, the Betterman anime series, the Magika no Kenshi to <PRESIDIO_ANONYMIZED_PERSON> [Magika Swordsman and Summoner |Magika no Kenshi to Shoukan Maou|] light novel and manga series, the Taimanin Asagi [Anti-Demon Ninja Asagi |Taimanin Asagi|] video game and hentai franchise, the Ane Naru Mono [The Elder Sister-like One |Ane Naru Mono|] manga series, the JoJo no Kimyou no Bouken [JoJo's Bizarre Adventure |JoJo no Kimyou no Bouken|] manga, video game, OVA and anime franchise, the obscure Kanokon manga and anime franchise, the Haiyore! Nyaruko-san [Nyaruko: Crawling with Love/Nyaruko-san: Another Crawling Chaos |Haiyore! Nyaruko-san|] light novel, OVA and anime franchise, the obscure Kishin Hōkō Demonbein [Machine God Roar Demonbane |Kishin Hōkō Demonbein|] video game, anime and manga franchise, the Saijaku Muhai no Bahamūto [Undefeated Bahamut Chronicle |Saijaku Muhai no Bahamūto|] light novel, manga and anime franchise, the Shinmai Maō no Tesutamento [Testament of Sister New Devil |Shinmai Maō no Tesutamento|] light novel, manga and anime franchise, the Bleach manga, anime, video game and light novel franchise, the Sonic the Hedgehog video games and Archie and IDW comics, the Elfen Lied [Elfen Song |Elfen Lied|] anime and manga franchise, the Hellsing manga and anime franchise, the WATCH_DOGS video game and literature franchise, the Kamen Raidā Kiba [Masked Rider Kiva |Kamen Raidā Kiba|] live action toukatsu, anime and literature, franchise the Battlefield 1-4 video games, the Ghost Recon series of video games done under the Tom Clancy name, the Chibi Vampire/Karin manga, anime and light novel franchise, the Tsukihime reboot visual novel series and the Melty Blood fighting game reboot, the anime adaptation of the original Tsukihime visual novel, the manga adaptation of the original Tsukihime visual novel, the Rainbow Six series of novels and video games done under the Tom Clancy name, the Call of Duty: Modern Warfare video game series and the Call of Duty: Advanced Warfare and Black Ops 3 games, the first two Resident Evil live action movies,  the Onii-chan dakedo Ai sae Areba Kankei Nai yo ne! [As Long as There’s Love, It Doesn’t Matter If He Is My Brother, Right? |Onii-chan dakedo Ai sae Areba Kankei Nai yo ne!|] light novel, manga and anime franchise, the High School DxD light novel, manga and anime franchise, the Crysis video game, comic book and novel franchise, the Kamen Rider 555 live action toukatsu series, the Fallout video game franchise, the Sonic the Hedgehog comics by IDW and Archie Comics, the Kādokyaputā Sakura [Card Captor Sakura |Kādokyaputā Sakura|] manga, anime and movie franchise, the Rosario+Vampire manga and anime franchise, the Asu no Yoichi!/Samurai Harem/Samurai Harem: Asu no Yoichi [Tommorow's Yoichi | Asu no Yoichi!|] manga and anime franchise, the manga, anime and video game spin-off franchise of the Fate/Stay Night video game, manga and anime franchise Fate/Stay Night: kalied liner Prisma Illya, the Inuyasha manga, anime and light novel franchise, the Kamen Rider: Dragon Knight live action TV, novel and video game franchise, the Kamen Raidā Ryūki [Masked Rider Dragon Knight |Kamen Raidā Ryūki|] live action toukatsu, novel and fighting game franchise, the Kamen Raidā Bureido [Masked Rider Blade |Kamen Raidā Bureido|] live action toukatsu, novel and fighting game franchise, the Higurashi no Naku Koro ni [Higurashi: When They Cry |Higurashi no Naku Koro ni|] visual novel, manga, anime, and light novel franchise, the Kurokami manga and anime franchise, the Bakemonogatari light novel, anime and manga franchise, the original Yu-Gi-Oh manga and the original 1998 anime adaptation of said manga, the Mahō Sensei Negima! [Negima! Magister Negi Magi/Magical Teacher Negima! |Mahō Sensei Negima!|] manga and anime franchise, the RWBY web series, manga and video game franchise, the Science Adventure [Chaos; Head, Robotics; Notes, Chaos; Child, Steins; Gate, Occultic; Nine] visual novel, manga, anime and light novel franchise, the Negima!? anime and manga franchise, the Naruto manga, anime, video game and light novel franchise, the Date a Live light novel, manga, anime, and video game franchise, the Maji de Watashi ni Koi Shinasai!! [Love Me, Seriously!! |Maji de Watashi ni Koi Shinasai!!|] visual novel, manga and anime franchise, the Black Bullet light novel, manga and anime franchise, the Kurokami anime franchise, and the Freezing manga and anime franchise, in which the black-haired, red-eyed, tall and slender but also somewhat muscular, laid-back, lazy and somewhat cocky but also determined and steadfast protagonist of Onii-chan dakedo Ai sae Areba Kankei Nai yo ne!, Himenokōji Akito, [Akito] who [Akito] takes the place of [whom Akito replaces in this fanfic chapter] the tall, slender and handsome, blue-haired, amber-eyed high school student Itsuka Shidō, the protagonist [Shidō] of [the franchise Shidō is |Shidō| the protagonist |Shidō| of] Date a Live, along with [the other character apart from Shidō whom Akito replaces in this fic] the tall, slender and muscular, partially cybernetic, blue-haired, amber-eyed teenage mercenary Satomi Rentarō, the protagonist [Rentarō] of [the media franchise Rentarō is |Rentarō| the protagonist |Rentarō| of] Black Bullet, the tall, slender and somewhat muscular, black-haired and red-eyed teenage mercenary Kisaragi Hayato, who [Hayato] is [who Hayato is] the protagonist [Hayato] of [the franchise Hayato is |Hayato| the protagonist |Hayato| of] Handoreddo and [the other character whom Akito replaces in this story apart from Shidō, Rentarō and Hayato], the short and slender but also muscular, green-haired and green-eyed, enthusiatic and kind but also painfully naive Midoriya Izuku, Boku no Hero Academia's protagonist [Izuku]. 

[Akito replacing Shidō, Rentarō, Hayato and Izuku] means that he [Akito] has [what Akito has] Shidō's ability to [what Shidō can do] seal [what Shidō can seal] Seirei [Spirits |Seirei|,  extraordinary beings |Seirei| from |where the Seirei come from| a different dimension who |Seirei| create |what Seirei create| a Spacequake that |the Spacequake created by a Seirei| is |a Spacequake| similar to |what a Spacequake resembles| a bomb explosion which |a Spacequake| destroys everything that it |a Spacequake| engulfs whenever they |the Seirei| come through to this world, |the Seirei| from |the media franchise Seirei are (Seirei) from Date a Live] with [what Shidō can seal Seirei with] a passionate romantic kiss after the targeted Seirei falls in love with him [Shidō], [Akito having Shidō's ability to seal Seirei with a passionate, romantic kiss] along with [what else Akito has in this story] Rentarō's nature as [what Rentarō is] a Kikai-Ka Heishi [Mechanical Solider |Kikai-Ka Heishi|, a formerly human cybernetic organism |a Kikai-Ka Heishi|, that |a Kikai-Ka Heishi| is |a Kikai-Ka Heishi| enhanced |a a Kikai-Ka Heishi| with |what makes a Kikai-Ka Heishi no longer a flesh and blood organism| immensely strong, durable, cybernetic replacement body parts that |a Kikai-Ka Heishi's cybernetic body parts| enhance its |a Kikai-Ka Heishi's| strength, speed, agility as well as |what else a Kikai-Ka Heishi has| rather strong psychic powers, |a Kikai-Ka Heishi| from |which series a Kikai-Ka Heishi is (a Kikai-Ka Heishi) from| Black Bullet] and [what else Rentarō is apart from |Rentarō| being a Kikai-Ka Heishi |Rentarō|] a Promoter [a individual |a Promoter| that |a Promoter| is |what a Promoter is| a person |a Promoter| who |a Promoter| is, |a Promoter| being |what a Promoter is| the supervisor |a Promoter| of |what a Promoter supervises| a 2-man combat team, |a Promoter| in charge of |what a Promoter is (a Promoter) in charge (a Promoter) of| analyzing battle situations, |a Promoter| from |the franchise a Promoter is (a Promoter) from| Black Bullet], as well as [what else Akito has] Hayato's status of being [what Hayato is] a Century Armament [a skintight combat bodysuit and weapon combination |a Century Armament| that |a Century Armament| enhances its |a Century Armaments'| users' strength, speed and agility a hundred fold and |a Hundred| can |what happens to a Hundred| be |a Hundred| activated as will with its |a Century Armament's| dormant state normally being a large jewel of some sort, |a Century Armament| from |the media franchise a Century Armament is (a Century Armament) from| Handoredd] user, [Hayato being a Century Armament user] in addition to [what else Hayato is apart from |Hayato| being |Hayato| a Century Armament user] a Variant [a human |a Variant| who |a Variant| has |a Variant| survived |what a Variant has survived| being infected with |the patheogon a Variant survived getting sick from| a near incurable deadly virus, which |a Variant's survival from the sickness given by the virus| grants him or her |a Variant| enhanced reaction time, speed and agility and various potent psychic powers in exchange for going berserk from the power they |a Variant| have, |a Variant| from |which series a Variant is (a Variant) from Handoredd], [Akito having  Shidō's ability to seal Seirei with a passionate, romantic kiss, Rentarō's nature as both a a Kikai-Ka Heishi and a Promoter, and Hayato's status as both a Century Armament User and a Variant] along with Izuku's love for Heroics and his [Izuku's] love for Quirks. 

Izuku's status as the son of [whose Izuku's parents are] his [Izuku's absentee father] the tall, slender and muscular, white-haired and red-eyed Midoriya Hiashi, [Hiashi] being [what Hiashi actually is] the infamous villain [Hiashi's true self] and [what Hiashi's true self is apart from being a villian] boss of [what Hiashi's true self is the boss of apart from being an infamous villian] Japan's criminal underworld, [Izuku's absentee father, Midoriya Hiashi, who is in fact the infamous villain and boss of Japan's criminal underworld] All for One, [Izuku's absentee father Hiashi being the infamous villain and boss of Japan's criminal underworld All for One] although he [Izuku] is [Izuku] of course unaware [Izuku] of [what Izuku] this [his father being an infamous villain |All for One| and the ruler |All for One| of Japan's criminal underworld] also applies to Akito in this fic, although he [Akito] is [Akito] clueless about [what Akito doesn't know] who his [Akito's] biological father [Hiashi] is and [Akito] just wishes to [Akito] live a normal life. 

The chapter starts with Akito, who [Akito] was [what Akito was |Akito| doing] heading home before [Akito] nearly being captured by the Nihon-jin [Japanese |Nihon-jin|] imperial military, [Akito] helping [whom Akito helps] the tall and slender but curvy and buxom with a mature physique, prudent, dedicated, level headed, calm and polite black haired and brown-eyed Yamato Nadeshiko [traditional Japanese beauty |Yamato Nadeshiko|] and corporate heiress Yaoyorozu Momo from [the franchise Momo is |Momo| from] Boku no Hero Academia, who [Momo] has [what Momo has] the ability to create things by manipulating the fat cells on her [Momo's] skin and [Momo] is [what Momo is] the Nihon-jin IS representative [Momo] and [Momo] also [what Momo also is] secretly [Momo] being [what Momo secretly is in this story] a powerful Seirei, [Momo secretly being a powerful Seirei in this story] and [Momo] replacing [the character Momo replaces] the cold and emotionless but also cheerful, childlike, naïve, emotional, energetic, and gullible Yatogami Tōka from [the media franchise Tōka is |Tōka| from] Date a Live along with [Momo] being [what Momo is] a Diva [Magika Kenshi] user, [Momo] having [what Momo has] long, brown hair and [Momo's] blue eyes in this story, [Akito helping Momo] whose [Momo's] powers as a Seirei he [Akito] had sealed away escape from [what Akito is |Akito| helping Momo escape from] the Nihon-jin imperial military, more specifically the Tokushu Shōbōtai [Fire Force] and the Anchi Supiritto Chīmu [Anti Spirit Team |Anchi Supiritto Chīmu|]. 

Akito is [Akito] forced to [what Akito is |Akito| forced to do] engage the soldiers in a brutal firefight and martial arts battle, [Akito] being [what happens to Akito] forced to [what Akito is forced to do] equip his [Akito's] Century Armament and [Akito] use his [Akito's] power as a Variant, [Akito] managing to easily defeat most of the Anchi Supiritto Chīmu members sent to capture Momo due to them [the Anchi Supiritto Chīmu operatives] being young teenage female Diva users and conventional magicians. The bullets fired from the Tokushu Shōbōtai's guns are more troublesome, but it's what he [Akito] sees while [Akito] finishing off the Anchi Supiritto Chīmu members that gives him [Akito] a near heart attack. 

 Sawatari Ginbei Haruomi, the calm, reserved, and rather smart but also shy and reclusive daughter [Ginbei] of [Ginbei's parents] Akito’s adoptive parents and thus Akito’s adoptive little sister [Ginbei], Silver-haired, short and petite but also rather buxom with bright green eyes and with a boyish way of talking [Ginbei], [Ginbei] has [what Ginbei has |Ginbei| done] secretly [what Ginbei has |Ginbei| secretly done] joined the dangerous anti-Seirei death squad division [the Anchi Supiritto Chīmu] of the Nihon-jin imperial military under a assumed identity [Ginbei as a Anchi Supiritto Chīmu member] wielding a rather powerful Century Armament and [Ginbei as a the Anchi Supiritto Chīmu member] even having a more dangerous IS unit to back it up. [Akito] quickly [what Akito quickly does] knocking out Ginbei before she [Ginbei] can [what Ginbei can do] recognize him [Akito] and [Akito] throwing [what Akito throws] a smoke bomb, he [Akito] quickly [what Akito quickly does] scoops her [Akito] up in a princess carry and [Akito] escapes with her [Akito] back home, [Akito's escape with Ginbei] confusing both the Anchi Supiritto Chīmu and the Tokushu Shōbōtai.

When Ginbei wakes up, she [Ginbei] is [Ginbei] surprised to see that she [Ginbei] is [Ginbei] lying in her [Ginbei's] bed at home and [Ginbei] large chest is [Ginbei's large chest] now exposed for the world to see, with the Seirei she [Ginbei] had [Ginbei] been hunting [Momo] being openly seductive with her [Ginbei's] beloved onii-chan [older brother |onii-chan|] Akito and [Momo] revealing to him [Akito] that she [Ginbei] is [Ginbei] a Seirei just like her [Momo], which [Momo's exposure of Ginbei being a Seirei like her |Momo|] causes the young girl [Ginbei] to blush in embarrassment as she [Ginbei] has deep incestuous feelings for him [Akito]. 

As she [Ginbei] replaces [whom Ginbei replaces in this story] the white-haired, red-eyed, time-manipulating young orphan girl Eri from Boku no Hero Academia and [Ginbei] is [what Ginbei is] the current incarnation [Ginbei] of [who Ginbei's past life is] the version of Nyarlathotep seen in Haiyore! Nyaruko-san, Ginbei attempts to [what Ginbei attempts to do] use her [Ginbei's] eldritch powers as an member of an incredibly powerful species of shape-shifting feline psychic extraterrestrials mistaken as an Outer God by human [Nyarlathotep] to try and escape but the entry of [who enters Ginbei's room]  Ginbei’s biological little sister Takanomiya Arisa, A beautiful russet-haired, red-eyed ball of energy [Arisa] who tries to use her [Arisa’s] vast intelligence to make everything interesting and child prodigy [Arisa] who had graduated from MIT at 12 years old, causing a scandal in the United States when it was leaked to the press, who [Arisa] replaces [the character whom Arisa replaces in this story] Shidō's younger sister, the short, petite and slender, coral-color haired, red-eyed, delicate, soft and kind but also determined Itsuka Kotori from [the media franchise Kotori is |Kotori| from] Date a Live, [Arisa] being [what Arisa is in this story] the human form [Arisa] of [what Arisa's true self is] the version of Cthuko seen in seen in Haiyore! Nyaruko-san, and [Arisa] replacing [the character Arisa replaces] the brown-haired, brown-eyed, short, slender, and petite but also curvy and buxom, kind, talkative and bubbly Uraraka Ochako from [which series Ochako is from] Boku no Hero Academia, who [Ochako] has [what Ochako has]  gyrokinetic [gravity manipulation] abilities, [Arisa] also being [what Arisa also is]  part-Huárén [Han Chinese/Han Chinese |Huárén|] [Ochako] in this story, [Arisa] being [what else Arisa is] the post-Daisaigai restored Dà Míngguó's/Míng Cháo's IS representative [Arisa in this story] in addition to [Arisa] being [what else Arisa is] a Butei trainee [Arisa] in this story, her [Arisa's] flames as both a flame-based Seirei and Cthuko's human form flickering and [Arisa's flames] buring around her [Arisa] as [Ginbei] tries in vain to escape. 

Arisa, seeing the distress her [Arisa's] older sister [Ginbei] is [Ginbei] in [Arisa] tells her [Ginbei] to calm down and [Arisa] explains that their [Arisa's and Ginbei's] shared love [Akito] can seal the Spirits with a kiss and that she [Arisa] has [Arisa] been waiting for this to happen so that she [Ginbei] can join Akito's growing harem and [Ginbei] join her [Arisa] in seducing Akito, which [Arisa's openly perverted statements] causes her [Ginbei] to blush even further in embarrassment and secret arousal as neko [cat |neko|] ears appear on top of her [Ginbei's] head and she [Ginbei] starts purring, a side effect of her [Ginbei's] true self [Nyarlathotep]. 

The door to the front of the house is heard opening, and the voice of the petite, fair skinned, short, slender and petite, dark-purple haired, blue-eyed, pragmatic, unenthusiastic, blunt, and teasing, cold and indifferent but also sensitive, fiercly loyal and easily flustered rockstar in training/pop idol in the making  Jirō Kyōka, who [Kyōka] has [what Kyōka has] the ability to [Kyōka's power] manipulate sound, [Kyōka] from [the media franchise Kyōka is |Kyōka| from] Boku no Hero Academia, [Kyōka] who [Kyōka] replaces [the person whom Kyōka replaces in this fanfic] the brownish-green-haired, blue-eyed, tall, slender and petite but also curvy and buxom lively and dedicated samurai heiress Tendō Kisara from Black Bullet, [Kyōka's voice] can be heard asking for Ginbei and Arisa, as she [Kyōka] is [what Kyōka is] the Takanomiya-uji's ruling main branch's oldest daughter [Kyōka] in this fic with Ginbei and Arisa being her [Kyōka's] biological younger sisters [Ginbei and Arisa] and Akito being her [Kyōka's] adoptive older brother, which [the sound of Kyōka's voice] causes him [Akito] to panic as she [Kyōka] is [Kyōka] clueless about [what Kyōka doesn't know] his [Akito's] power to seal spirits or his [Akito's] part-time job as a Century Armament weilding mercenary. 

Momo, feeling seductive and unhappy that he [Akito] has [Akito] been trying to avoid having sex with the girls in his [Akito's] harem, [Momo] decides to openly show her [Momo's] love for him [Akito] when Kyōka arrives, which almost causes problems until Kyōka realises that Arisa is [Arisa] clinging to him [Akito] too and [Kyōka] relents, stating that she [Kyōka] and her [Kyōka's] younger sisters [Ginbei and Arisa] are [Kyōka, Ginbei and Arisa] his [Akito's] fiancees [Kyōka, Ginbei and Arisa] anyway and that he [Akito] would [Akito] always have a harem, anyways.

Suddenly, the sound of marching boots interrupts everyone's time and Kyōka and Akito turn around, only for them [Kyōka and Akito] to see Anatasia Nasuhara, a stunning, short and slender, but also buxom Nordic beauty [Anatasia] with short blonde hair [Anatasia] and [Anatasia’s] ice-blue eyes and the daughter [Anatasia] of [whom Anatasia's parents are] a Russian-American Jewish oligarch [Anatasia’s mother] who [Anatasia's mother] had fled the country [post-Soviet, post-Daisaigai Russia] and a Nihon-jin industrial tycoon [Anatasia’s father] and Anatasia ha tsrouble understanding social cues due to her [Anatasia’s] upbringing and often prefers to stay by herself [Anatasia], [Anatasia] walk up to him [Akito] and [Akito] hit him [Akito] across the face, [Anatasia] cursing in a mixture of Russian and Yiddish at him [Akito] for [Akito] failing to tell her [Anatasia] who he [Akito] really was. 

Kyōka summons [what Kyōka summons] her [Kyōka's] personal IS Unit Kurokishi [Kyōka's personal IS Unit] as she [Kyōka] prepares to [what Kyōka prepares to do] annhilate Anatasia with its [Kurokishi's] six offensive drone/shield bits as she [Kyōka] prepares to activate [what Kyōka prepares to use] its [Kurokishi's] arm mounted plasma gatling gun, its [Kurokishi's] two jousting pole-like hip-mounted plasma blaster cannons and its [Kurokishi's] purple-colored energy two-handed sword with Arisa also summoning her [Arisa's] personal IS Unit, Shenlong [Arisa's IS Unit], [Arisa's activating Shenlong], [Arisa's in Shenlong] preparing to use [what Arisa prepares to use] her [Arisa's] Lóng Lóu [Dragon Cannon |Lóng Lóu| a cannon |the Lóng Lóu| that |what a Lóng Lóu does| compresses space and fires it |the space compressed by a Lóng Lóu| as a bullet] on [where Shenlong's Lóng Lóu is located] its [Shenlong's shoulders] and her [Arisa's] Yuèliàng [Bright Moon |Yuèliàng|, a pair of Huárén scimitars |Yuèliàng| that |Yuèliàng| are |Yuèliàng| part of Shenlong's weaponry, [Kyōka and Arisa activating their |Kyōka's and Arisa's| personal IS Units in preperation to annhilate Anatasia] until Ginbei's sharp eyes detect [what Ginbei sees] that the half-Russian beauty [Anatasia] is [Anatasia] wearing a form fitting, red and black accented Century Armament that [Anatasia's Century Armament] emphasises her [Anatasia's] waist, childbearing hips and [Anatasia's] generous bosom, [Ginbei's observation of Anatasia's Century Armament] causing her [Ginbei] to realize that she [Anatasia] is [Anatasia] a Slayer [Century Armament weilders |Slayers| who |Slayers| hunt extraterrestial insectoid unstoppable war machines known as Savages for a living. |Slayers| from |the media franchise Slayers are |Slayers| from Handoredd] and the current heiress [Anatasia] to [what Anatasia is |Anatasia| next in line to lead] both the Nasuhara Zaibatsu [Nasuhara Megacorp |Nasuhara Zaibatsu|] and the major Liberia-based defense contractor and tech company Warslan Enterprises, which she [Ginbei] blurts out in her [Ginbei's] excitement, causing him [Akito] to shake his [Akito's] head as he [Akito] is sure that his [Akito's] secret part-time job as a Slayer working for Warslan is exposed. 


Arisa, Momo and Kyōka learn during the conversation that inevitably follows that not only Akito, but Ginbei was employed by Warslan Enterprises as a Slayer, with Ginbei posing as a boy while [Ginbei] working at Warslan Enterprises. After noticing him [Akito] attempt to run at the sight of the girls' bouncing breasts, Anatasia reluctantly agrees to join the harem as the Harveys [Anatasia's maternal family |the Harveys|, Harvey is the Anglo last name they like using] have a marriage contract with the Takanomiyas.


P.N for the chapter's background: Thirty years before the events of the chapter and just after the Daisaigai [Great Cataclysm |Daisaigai|, a devastating all-out combined conventional and nuclear war |the Daisaigai| between |the major powers that fought in the Daisaigai| the liberal constitutional republic of the USA, the European Union, the Arab monarchies, Nihon/Nippon/Yamato, the Republic of China on Taiwan and Vietnam against |the US-Nihon lead blocs’ rivals in the Daisaigai| the Rossiyskaya Federatsiya |Russian Federation (Rossiyskaya Federatsiya), the oligarchic, mafia-run, totally corrupt post-Soviet Russkiye (Russian /Russkiye/) nation state (the Rossiyskaya Federatsiya)| and the Islamic Republic of Iran, |the Daisaigai| ending in |the Daisaigai’s end result| flames exploding around the world, devastating it |Earth during the Daisaigai| and |the Daisaigai| leaving most parts of the planet |the Daisaigai| uninhabitable, |the Daisaigai devastating the Earth| with continents being torn apart and some nations being left uninhabitable from |the media franchise the Daisaigai happens in| Fire Force|], [the Ōtsutsuki Ichizoku leaving the Genso no Kuni after the Daisaigai] and [the Ōtsutsuki Ichizoku after leaving the Genso no Kuni after the Daisaigai] finding itself [the Ōtsutsuki Ichizoku] in post-Daisaigai Nihon [Japan |Nihon|], [the Ōtsutsuki Ichizoku] quickly taking over the ruins of the Land of the Rising Sun [post-Daisaigai Nihon] and [the Ōtsutsuki Ichizoku] becoming its [the Ōtsutsuki Ichizoku's] new Ōke [imperial family |Ōke|], [post-Daisaigai Nihon under Ōtsutsuki rule] reclaiming Chōsen [the Korean peninsula/Korea/Hanguk |Chōsen|, |Chōsen| known as |Chōsen’s| other name Hanguk in |which language Chōsen is (Chōsen) known (Chōsen) as Hanguk in Hangugeo |Korean/the Korean language (Hangugeo)| Chōsen] Ryūkyū/Ruuchuu [the Ryukyu islands/Okinawa/Ryukyu |Ryūkyū/Ruuchuu|], Karufuto [Russia’s Sahlakin and Kuril Islands |Karufuto|], Formosa [Taiwan and the Pengu Islands |Formosa|] Senkaku [China’s Daiyou Islands |Senkaku|], the Carolines and the Marinas with the help of mass produced IS units [Infinite Stratos, |an IS unit| a powered exoskeleton |an IS unit| originally created |the IS units| for |what the IS units for originally created for| space exploration, that |an IS unit| possess |what an IS unit possesses| technology and combat capabilities far more advanced than any other weapon system while |an IS unit| possessing |the specific capabilities, equipment and weapons of an IS unit| nigh-invulnerable shield barrier, 100% optical camouflage, hypersonic speeds, and capable of pulling off insane high G maneuvers while seemingly unaffected by gravity-induced blackout/red-outs and also space flight an |an IS unit| can |an IS Unit| only be used by girls from |which franchise IS Units are (IS Units) from| IS: Infinite Stratos] and Tactical Surface Fighters [oversized fighter planes |TSF|, |TSFs covered in| the substance TSFs are (TSFs) covered (TSFs) in| an anti-projectile and heat-resistant composite that |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| has |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| been |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| been |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| been |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| further treated |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| been |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| with |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| been |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in’s further treatment| anti-laser coating with |what TSFs have| the ability |TSFs| to |what TSFs can (TSFs) do| operate |TSFs| in every sort of condition, |TSFs| having |what TSFs possess| particle beam cannon and plasma blaster weaponry, |TSFs| being |what TSFs are| able |TSFs| to |TSFs| operate in space in addition to |TSFs| flying in the skies of Earth, |TSFs| being |what TSFs are| near impossible to destroy |TSFs| with conventional weaponry, |TSFs| possessing |what else TSFs have| the ability |TSFs| to |what else TSFs can (TSFs) do| transform into |what TSFs can (TSFs) transform (TSFs) into| oversized humanoid mechs |TSFs’ other forms| with |TSFs’ mech forms| all-purpose manuvarabilty, |TSFs’ mech forms| moving via |the means of movement for a TSF’s mech form| a combination of bipedal locomotion and rocket thrust, |TSFs’ mech forms| using stealth and superior mobility to |what TSFs’ mech forms utilize stealth and superior mobility for| outmanuering any opponent on the battlefield, |TSFs| from |which media franchise TSFs are (TSFs) from| the Muv-Luv franchise] were [TSFs] still [TSFs] developed in [when the TSFs were |the TSFs| created] the 1970s and [TSFs] used [TSFs] in warfare, although [TSFs] never [TSFs] been [TSFs] shown to the public, but the BETA never invaded Earth from the moon like in canon Muv-Luv, so there was no real need for them [TSFs] in East Asia until the Daisaigai and [post-Daisaigai Nihon under Ōtsutsuki rule ruling over Chōsen, Karufuto, Senkaku, the Carolines and the Marinas] restoring [what post-Daisaigai Nihon under Ōtsutsuki rule ruling over Chōsen, Karufuto, Senkaku, the Carolines and the Marinas restores] the Ikh Manjuuryn Ezent Güren [the Great Manchurian Empire/Empire of Great Manchuria/Manchukuo/Manchoukuo |Ikh Manjuuryn Ezent Güren|] in  Manjügo [Manchuria and Outer Manchuria |Manjügo|], [post-Daisaigai Nihon under Ōtsutsuki rule ruling over Chōsen, Karufuto, Senkaku, the Carolines and the Marinas also restoring] the Dà Míngguó, [Great Ming State/Empire of the Great Ming/Great Ming/Ming Empire |Dà Míngguó|], [the Dà Míngguó] also [what also happened to the Dà Míngguó]  [the Dà Míngguó] also [what also happened to the Dà Míngguó] known [the Dà Míngguó] as [the Dà Míngguó’s other name] the Míng Cháo [“Ming dynasty” |Míng Cháo|] in [where in East Asia post-Daisaigai Nihon under Ōtsutsuki rule ruling over Chōsen, Karufuto, Senkaku, the Carolines and the Marinas restores the Dà Míngguó/Míng Cháo] in Zhōngguó [Han China/China/Hanland |Zhōngguó|]  and Mengjiang in Zhōngguó's Suiyan region and the Chahar region of  Nèi Měnggǔ [Inner Mongolia |Nèi Měnggǔ|] along with [post-Daisaigai Nihon under Ōtsutsuki rule] setting up puppet states in Siberia and the Russian East Coast and [post-Daisaigai Nihon under Ōtsutsuki rule] restoring historical monarchies in South East Asia before the chapter starts, [post-Daisaigai Nihon under Ōtsutsuki rule] essentially reviving the old WW2 era Co-Prosperity Sphere. 

 The Ōtsutsuki Ichizoku eventually returns [to the Genso no Kuni] and [the Ōtsutsuki Ichizoku] reconquers it [the Genso no Kuni], [the Ōtsutsuki Ichizoku after reconquering the Genso no Kuni] dismantling the shinobi system and replacing it [the Genso no Kuni's shinobi system] with Hidan no Aria's Butei [Armed Detective |Butei|] system, which [the Butei system] replaces canon My Hero Academia's Hero system with younger generations who don't join Fire Force's Tokushu Shōbōtai [Special Fire Force |Tokushu Shōbōtai|] being sent to Butei Academies alongside Diva users from Magika Kenshi and Quirk users from Boku no Hero Academia. 

The Anchi Supiritto Chīmu [Anti Spirit Team |Anchi Supiritto Chīmu|] from [which franchise the Anchi Supiritto Chīmu is |the Anchi Supiritto Chīmu| from] Date a Live uses [what equipment the Anchi Supiritto Chīmu uses in this chapter] IS Units and a special type of Century Armament in its [the Anchi Supiritto Chīmu's] duty of [what the Anchi Supiritto Chīmu's job is] hunting the Seirei, [the Anchi Supiritto Chīmu] staying out of sight from the Nihon-jin [Japanese |Nihon-jin| public].

The events of the chapter happen in chronological order and all occur in the same universe, so there is no dimensional crossing or multiverse.