Write interesting, riveting, lengthy, dialogue-filled, drama romance harem science fantasy Lovecratfian story for a crossover fanfic between High School DxD, Majikoi, the World Only God Knows, RWBY, IS: Infinite Stratos, Hokou Kishin Demonbane and Robotics; Notes, in which the protagonist of High School DxD, the brown-haired, amber-eyed, kind and understanding but also reserved, nerdy and self-doubting fake pervert Hyoudou Issei, takes the place of the protagonist of the World Only God Knows, the analytical and genius but also reserved, delusional and cocky gamer known as the "God of Games" the brown-haired and brown-eyed glasses wearing Katsuragi Keima, the protagonist [Keima] of the World Only God Knows,  the highly intelligent, mature and confident but sly, somewhat nihilistic, secretly lecherous and deceptive Naoe Yamato, the protagonist [Yamato] of Majikoi and the lazy, very unmotivated, relaxed, blunt and sarcastic but also very smart, robotics loving, caring and considerate, brown-haired and brown-eyed Yashio Kaito, the protagonist [Kaito] of Robotics; Notes [Issei taking the place of Keima, Yamato and Kaito] with "Naoe Yamato" being a name  ["Naoe Yamato"] he [Issei] used while [Issei] in his [Issei's] hometown of Kamakura and "Keima Katsuragi" being a corruption of Yashio Kaito, his [Issei's] true name [Yashio Kaito] that found its way into the records, which he [Issei] uses to get out of sticky situations. Issei in this story has canon Keima's analytical and genius nature along with his [canon Keima's] skill at gaming and mechanics along with his [canon Keima's] arrogance and [canon Keima's] view of the world as a video game to be exploited, canon Yamato's genius brain, academic brilliance and skill at strategy and canon Kaito's lazy, very unmotivated, relaxed, blunt and sarcastic personality aspects as well as his [canon Kaito's] genius and [canon Kaito's] love for robotics, along with his [Issei's] own unique personality and powers in this scene. 

The events of Majikoi happened before the events of Robotics; Notes, which [the events of Robotics; Notes] occurred when Issei was [Issei] on vacation in Okinawa. The events of the World Only God Knows happened at around the same time of the first two seasons - first few books of High School DxD.

Issei also replaces the blonde-haired, blue-eyed Jaune Arc, the male protagonist [Jaune] of RWBY, [Issei] having Jaune's signature sword [Crocea Mors] and [Jaune's] limitless Aura and [Jaune's] Semblance of Aura Amp [the ability |Aura Amp| to amplify his |Jaune's| own Aura and that of others, effectively increasing the effects of Aura], but Issei doesn't become a Huntsman, despite [Issei] having skill in weaponry, martial arts and swordplay [unlike Jaune], [Issei] fearing for his [Issei's] life after the incident at the MF Anemone. 

The story begins with Issei thinking about his [Issei's] life as he [Issei] puts some clothes on the line, from his [Kaito's] childhood in Kamakura with his [Yamato's] friends in the Kazama Kazoku [Kazama Family |Kazama Kazoku|] and his [Issei's] nihilistic personality before that and the video game addiction he [Kaito] developed before [Kaito] meeting the Kazama Kazoku due to his [Kaito's] best friend, the light brown haired, blue-eyed, tall and slender, cheerful, carefree, upbeat, enthusiastic, cooperative and open-minded part Russkye [Russian |Russkye|], English Anglo-Saxon Japanese noble heiress Shidō Irina, who [Irina] moved away from Kamakura with her [Irina's] family when she [Irina] was five and he [Issei] was six. 

As Issei is [Issei] thinking about his [Issei's] life, the black-haired, red-eyed, tall, curvaceous and rather buxom, tomboyish, tough-going and confident, overconfident, battle maniac, fun-loving and spendthrift, slightly bisexual and highly lecherous but also soft, understanding andf caring martial arts prodigy and renowed streer fighter Kawakami Momoyo, who [Momoyo] is [who Momoyo is] one of the main heroines of Majikoi and [Momoyo] is [Momoyo] Issei's distant cousin [Momoyo] in the story this scence takes place, along with [Momoyo] replacing [whom Momoyo replaces] Raven Branwen from RWBY, [Momoyo] having Raven's semblance [Kindred Link allows her |Raven| to |Raven| create portals to instantly travel to people she |Raven| has a strong emotional connection with and can cover vast distances through them] and Raven's weapons in this story and [who else from Kamakura apart from Momoyo is also there] Momoyo's adoptive little sister, the cheerful, competitive, determined, perseverant but academically disinterested and somewhat ignorant and naive, brown-haired, amber-eyed, short and petite but secretly buxom ookami [wolf] yokai [monster |yokai|] martial arts prodigy and swordswoman in training Kawakami Kazuko, who [Kazuko] is [Kazuko] also a major heroine [Kazuko] in Majikoi and [Kazuko] is in fact [Kazuko's true identity in this story] the hot-blooded, quick to act, upbeat and cheerful but also very clingy and naive, brown haired, and brown eyed, short and petite but also somewhat buxom Senomiya Akiho, who [Akiho] is [who Akiho is] one of Robotics; Notes' main heroines [Akiho] and [Akiho/Kazuko] is [Akiho/Kazuko] Kaito's/Issei's half sister [Akiho/Kazuko] in this story, along with [Kazuko] replacing [whom Kazuko replaces in this story] the hyperactive, weapons geek, martial arts prodigy, open and honest but battle eager, naive and somewhat clueless, red-black haired, gray-eyed, short, slender and petite Ruby Rose, the male female protagonist [Ruby] of RWBY, Kazuko having [what Kazuko has] Ruby's mechanical skills, tactical intelligence and [Ruby's] amateur Huntswoman training,  along with her [Ruby's] mechashift weapon,the sniper rifle-scythe combination Cresent Rose [Ruby's weapon] as well as her [Ruby's] Semblance, Petal Burst [a speed type Semblance |Petal Burst| that |Petal Burst| allows her |Ruby| to |Ruby| move at inhuman speeds that are nearly too fast for the eye to catch, along with |Petal Burst| having limited flight capabilities] the two [Issei/Kaito and Akiho/Kazuko] being [Issei/Kaito and Akiho/Kazuko] seperated [Issei/Kaito and Akiho/Kazuko] after an accident [the MF Anemone Incident] on a cruise ship that left her [Akiho's/Kazuko's] mother dead was [the accident] discovered to be a attempted assasination by rouge elements of both the US and Russian government by the Japanese government, the two [Kaito and Akiho] only reuniting upon her [Akiho's] adoption by Momoyo's family as Kazuko and [Kaito as Yamato] introducing her [Akiho as Kazuko] as his [Kaito's as Yamato's] 'childhood friend' to his [Kaito's as Yamato's] friends, [Momoyo and Kazuko approaching Issei] with the infamous banchou [Japanese delinquent leader |banchou|] of Kamakura [Momoyo] gently rubbing her [Momoyo's] swollen stomach which [Momoyo's swollen stomach] is due to her [Momoyo's] late stage pregnancy, [Momoyo and Kazuko] having [what Momoyo and Kazuko did] slept [had baby making sex] with him [Issei] along with all of the other girls in his [Issei's] sizable harem during the shared honeymoon they [Issei and the girls of his |Issei's| harem] all had with each other [Issei and the girls of his |Issei's| harem]. 

Kazuko on the other hand, is gently holding her [Kazuko's] twin newborn babies which like their [the babies'] mother [Kazuko] have wolf ears and tails, but [the babies] have a darker shade of brown hair thanks to his [Issei's] influence. Kazuko's inhuman nature [being a ookami yokai] was what allowed her [Kazuko] to give birth earlier than Momoyo and the other human girls in [Issei's] harem. The girls [Kazuko and Momoyo] arrived on the back veranda of the giant mansion where Issei, his [Issei's] wives and [Issei's] consorts live which [the Hyoudou family mansion] was [the Hyoudou family mansion] entirely custom-built using their [Kazuko's and Momoyo's] semblances, with [Kazuko] gently approaching Issei and [Kazuko] using her [Kazuko's] tail to hug him [Issei] since her [Kazuko's] hands are fool. 

When Kazuko is finished hugging Issei, she [Kazuko] lets go and pouts at him [Issei] for not calling home [Kamakura] as he [Kaito] was taken in by agents of the Japanese government and [Kaito] later abruptly moved after the events of Robotics; Notes, to which he [Issei] explains that he [Issei] became a state witness under the witness protection program after the near-apocalypse that they [Akiho and Kaito] prevented. Powerful factions in the European and African criminal underworld aligned with each other had created the conditions for said artificial world end and were enraged that it didn't happen, paying off the compromised KGB, CIA and Mossad to wipe the siblings [Kaito and Akiho] out which of course failed as Akiho, was simply too strong for them [the assasins] and in her, [Kazuko's] naivety, viewed her decimation of said hitmen as simply training to get stronger. 

Momoyo smiles at the memory, [Momoyo] recalling in vivid detail how she [Momoyo] had [Momoyo] gotten in on the action and [Momoyo] cracking her [Momoyo's] knuckles as the memories pass through her [Momoyo's] quick mind, the short, petite and slender but also somewhat buxom, black-haired, purple-eyed, arrogant and brash but also sensitive, shy, reserved, softspoken and lonely Japanese princess and traditional Japanese beauty, Fushikawa Kokoro, a major heroine [Kokoro] in Majikoi, who [Kokoro] uses the public alias of [what Kokoro's public alias is in this story] Ayukawa Tenri, a major side character [Tenri] in the World Only God Knows with a similar appearance [Tenri] and backstory [Tenri], [Kokoro] smirks as she [Kokoro] gets off the porch where she [Kokoko] was sitting, [Kokoro] gently holding her [Kokoro's] newborn baby as she [Kokoro] does so, and [Kokoro] gives him [Issei] a gentle peck on the check after she [Kokoro] makes her [Kokoro's] way to where he [Issei] is, [Kokoro] happy for [what makes Kokoro happy] finally being a mother [Kokoro].

As Issei finishes explaining everything to his [Issei's] beloved little sister [Kazuko], with his [Issei's] childhood friend [Kokoro] and first wife [Kokoro] intently listening, [Issei] drawing a crowd of his [Issei's] wives, lovers and consorts as he [Issei] does so,  he [Issei] notices his [Issei's] master, the seductive, sly, cunning and brilliant but also kind and considerate, scarlet-haired, blue-eyed, tall and buxom devil princess Rias Gremory, who [Rias] was [what Rias was] also his [Issei's] English teacher at Kuoh before they [Rias, Issei and the other girls of Issei's harem] eloped with each other [Rias, Issei and the other girls of Issei's harem] at the end of Issei's second year, [Rias] looking on with approval as she [Rias] gently cradles her [Rias'] triplets which [Rias' triplets] either have his [Issei's] brown hair and her [Rias'] blue eyes, reddish-brown hair with hetrochromatic eyes, or her [Rias'] red hair and his [Rias'] amber eyes, [Rias] singing soft lullabies to them [Rias' babies] in Russian, Swedish and then Norweigan as she [Rias] unfurls her [Rias'] large, black bat wings to protect herself [Rias'] and her [Rias'] children [Rias' triplets] from the heat, causing eyebrows to be raised by the more religious girls in his [Issei's] harem. 

Besides Rias, her [Rias'] loyal queen, the beautiful and alluring, tall, curvy and buxom black-haired, purple-eyed traditional Japanese beauty elegant and gentle but also seductive and highly sadistic in battle and also sadomasochistic in the bedroom young woman, half-fallen angel, half-devil Himejima Akeno, [Akeno] gently cradles her [Akeno's] newborn twins, who [Akeno's] twins have a darker shade of their [Akeno's newborn twins'] father's [Issei's] brown hair and her [Akeno's] purple eyes as she [Akeno] also intently listens to his [Issei's] story as her [Akeno's] one fallen angel wing and [Akeno's] other devil wing emerge from her [Akeno's] back to protect her [Akeno] and her [Akeno's] babies from the heat. 

On the other side of the porch, a now-grown-up Irina, who [Irina] has [Irina] developed into a beautiful, buxom and seductive young woman [Irina in the present day] and [Irina] has [Irina] returned to Japan to be with her [Irina's] one true love [Issei], [Irina] marrying him [Issei] and [Irina] being part of the honeymoon orgy as well, [Irina] becoming pregnant with and [Irina] giving birth to his [Issei's] babies as a result, [Irina] gently holds her [Irina's] newborn twins as she [Irina] gently rocks them, [Irina] singing softly in Russian. 
 
As he [Issei] finishes answering Kazuko's earnest question, [Issei] keenly aware of [what Issei is |Issei| keenly aware |Issei| of] , the backdoor of the Hyoudou family mansion opens,  the calm, reserved, and soft-spoken pale-skinned, gray-haired, yellow-eyed, tall and slender but also buxom and curvaceous Japanese noble heiress with a X in the middle of her forehead, Kuki Ageha, who [Ageha] is [Ageha] a major supporting character [Ageha] in Majikoi and [Ageha] is [Ageha] Momoyo's major rival [Aghea], who [Ageha] is [Aghea] the current head [Aghea] of [the organization Aghea heads] the world-spanning, electronics, manufacturing and financial giant of the Kuki Zaibatsu [Kuki Megacorp |Kuki Zaibatsu|] and [Aghea] replaces [the character Aghea replaces] Winter Schnee from RWBY, [Aghea] having [Winter's] Semblance of Glyphs [the ability to |Glyphs| psychically craft a sleek emblem that possesses a multitude of enchanting abilities, from graceful motion to summoning ethereal embodiments and even sculpting mesmerizing formations of Dust. This exquisite Glyph bears a striking resemblance to the emblematic snowflake insignia of the esteemed Schnee lineage, with each distinct ability being distinguished by its own unique and captivating design. Glyphs possess the remarkable ability to function as an impervious stronghold. Furthermore, these exquisite symbols can propel objects with astonishing swiftness, effortlessly transcending the constraints of both aerial and terrestrial realms, as astutely portrayed in the captivating chapter "Players and Pieces". Glyphs possess a multitude of captivating influences over various entities, be it objects, creatures, or individuals. They possess the remarkable ability to propel, skillfully manipulating motion, while the fundamental Glyph variant exerts forceful pushes upon surrounding elements, akin to a steadfast foundation. The visual manifestation of these glyphs undergoes a striking metamorphosis, each type possessing its own distinct allure. Three exquisite instances include the Time Dilation Glyphs, evoking a sense of temporal transcendence, the Arma Gigas Summoning Glyphs, summoning forth a formidable presence, and the Queen Lancer Summoning Glyphs, heralding the arrival of majestic regality. Time Dilation, a captivating iteration of Glyphs, exquisitely enhances the pace of actions.] and [Winter's] abilities in addition to her [Aghea's] own formidable martial arts skills and [the other person whom appears apart from Ageha] her [Aghea's] younger sister, the gray-haired, pink-eyed, short, petite and slender, secretly buxom refined, mature and highly intellectual but also shy, reserved and childish Kuki Monshiro, who [Monshiro] goes by the public alias of [the public identity Monshiro uses in this scence] Yukifune Airi, a petite girl [Airi] with [Airi's chararistics] light skin, long, grey hair tied with a black bow with [Airi's personality] cheerful, playful and innocent but also sad and lonely, who [Airi] plays a major role in the events of Robotics; Notes, [Monshiro] also [what Monshiro also does] replacing [the character Monshiro replaces] Weiss Schnee from RWBY, [Monshiro] having [what Monshiro has] Weiss' Semblance [the same Glyphs as Winters'] and Weiss' weapon, the revolver-mechashift weapon Myrtermaster, in addition to pieces of Weiss' arrogant and cocky personality in addition to [what else Monshiro has] being the current incarnation [Monshiro] of [what Monshiro is |Monshiro| the current incarnation |Monshiro| of] the egotistical and ill-tempered but also shy, reserved and somewhat naive, pink-haired, green eyed, short, slender and petite Al Azif, who [Al] is [Al] the human form [Al] of [what Al is |Al| the human form of |Al|] the feared Necromonion [the book of the Dead |Necronomicon|] the most powerful grimore [the Necronomicon] in the world with not only the ability to revive and even control the dead [Necronomicon] but also the most powerful and versitile spells [Necronomicon], from [the media franchise Al is |Al| from] Hokou Kishin Demonbane, [Monshiro] having [what Monshiro has] Al's status as the human form of the Necronomicon as well as the ability to use its [the Necronomicon's] contents. 

The Kuki's are Kaito's distant paternal relatives in the story, with him [Kaito] receiving a quite extravagant allowance from the Kuki sisters' [Monshiro's and Aghea's] father, which [the allowance] he [Kaito] mostly saves and invests, [Kaito's financial wisdom] making him [Kaito] quite rich himself although he [Kaito] was [Kaito] initally clueless about this [his |Kaito's| own vast wealth], and as they [Monshiro and Aghea] emerge from the back porch of the Hyoudou family mansion, [Aghea] rubbing her [Aghea's] own swollen belly and Monshiro holding her [Monshiro's] newborn babies, which [Monshiro's babies] have silverish-brown hair and her [Monshiro's] red eyes as they [Monshiro and Aghea] sit on the back porch. 

As Issei continues putting clothes on the line, he [Issei] thinks back to the events of Robotics; Notes, where his [Kaito's] beloved little sister's [Akiho's] supposedly insane plans of creating a fully functional, anime and video game style humanoid mecha [Super GunBuild-1] ended up b working out in the end, with the mech [Super GunBuild-1] being useful in the fight against the traitorous, white-haired, blue-eyed, tall and slender megalomaniacal Okinawan mad scientist Kimijima Kō and his [Kō's] elite mafia group masters, the Committee of 300, which resulted in him [Kaito] learning a strange, hidden truth about the Kukis - the youngest daughter of the family [the Kukis] is imprinted with the magical and technical knowledge accumulated by the clan [the Kukis] through the long centuries, which was the basis of the infamous Necronomicon from Lovecraft's works. 

The current "Necronomicon" is Monshiro, who [Monshiro] awakened her [Monshiro's] abilities [as the current "Necronomicon"] split her [Monshiro's] consciousness between the real and the virtual world, her [Monshiro's] power transforming Super GunBuild-1 into a fully functional Gundam style mecha that [Super GunBuild-1] was [Super GunBuild-1] able to take on the horde of Committee of 300 operatives and [Commitee of 300] mafia and rouge intelligence agency contractors descending upon Okinawa's space station to start the apocalypse as he [Kaito] used his [Kaito's] skills in playing Gun-Ballad to pilot it [Super GunBuild-1] while Akiho was [Akiho] pressed up against his [Kaito's] body, her [Akiho's] rather large bust squeezing near his [Kaito's] arm, with Monshiro, who [Monshiro] was [Monshiro] acting as the unit's [Super GunBuild-1's] guiding AI at the time, pouted in jealousy.

Returning to the present, Akeno and Irina stare in surprise and somewhat in wonder as the younger Kuki sister [Monshiro] begins [what Monshiro begins to do] to create and manipulate a combined Glyph-magic circle expression.