Chapter Summaries

Dimitrie Vattler returned to Itogami Island under diplomatic protection, with Sayaka Kirasaka assigned to monitor him. At Saikai Academy, Yotsuba Mahiro learned of Vattler’s arrival while Asagi remained troubled by the unidentified hacker who had breached the Keystone Gate.

• Koyomi Himgari refused to see the man who cursed her, and An Shiranui told her that Dimitrie Vattler had returned to Itogami Island.
• Vattler sailed toward Itogami Island aboard Oceanus Grave II and received permission from the Japanese government to enter the Demon Sanctuary as an envoy.
• Sayaka Kirasaka introduced herself as Vattler’s Lion King Agency monitor and warned that she could execute him if necessary.
• Yotsuba Mahiro heard from Beta that Vattler had arrived while he watched the girls at Saikai Academy’s pool.
• Asagi told Chikushima Rin that she was frustrated because she still could not identify the hacker who had infiltrated the Keystone Gate and erased the evidence.

Yotsuba Mahiro was attacked by Sayaka Kirasaka, a Lion King Agency operative, but captured her before she could escape. Yukina Himeragi arrived and recognized Sayaka, only for Mahiro to silence Sayaka as she challenged him.

• Beta told Yotsuba Mahiro that Dimitrie Vattler had arrived on Itogami Island as a representative of War King's Domain, and Mahiro guessed Vattler was smuggling the Black Death Emperor Faction's Narakvera weapon to the island.
• While resting on a rooftop after lunch, Yotsuba Mahiro was targeted by an exploding bench and a cursed metal arrow, then destroyed Sayaka Kirasaka's transforming shikigami with Nihility.
• Alpha and Beatrice captured Sayaka Kirasaka and brought her before Yotsuba Mahiro, who questioned her about her identity.
• Yukina Himeragi burst onto the rooftop, recognized Sayaka, and asked what she was doing there.
• Sayaka insulted Yotsuba Mahiro and insisted that only Yukina could call her by name, so Mahiro covered Sayaka's mouth.

Sayaka delivered Dimitrie Vattler’s invitation to Mahiro, who dismissed its importance despite Yukina’s warning about the First Progenitor’s domain. When the invitation required a partner, Mahiro teased Yukina by suggesting other women until she angrily called him out.

• Yukina pleaded with Mahiro to spare Sayaka after Sayaka threatened him, and Sayaka revealed she had brought an invitation from Dimitrie Vattler.
• Mahiro read the invitation to a cruise ship party and had Beatrice release Sayaka, who threatened to settle the score before leaving.
• Yukina warned Mahiro that Vattler’s invitation carried the authority of the Kingdom of Ardigia and the First Progenitor, but Mahiro said he and Vattler were old acquaintances.
• Yukina pointed out that the invitation asked Mahiro to bring a partner, and Mahiro pretended to consider several women before naming Asagi Aiba.
• Yukina angrily interrupted Mahiro and accused him of teasing her, making him laugh at her reaction.

Mahiro and Yukina prepared to attend Vatler’s banquet while Natsuki raided a Kanon Alchemical Industries laboratory and discovered that a dangerous relic called Narakvera had been taken. Mahiro and Yukina boarded Vatler’s ship, leaving Natsuki worried that a storm was coming.

• Yukina worried she had nothing to wear to Vatler’s party, and Mahiro reassured her before they arranged to meet later.
• Natsuki and Astarte accompanied Special Zone Security Force officers to arrest Yosuke Makimura, who transformed into a werewolf and attacked them.
• Astarte defeated Makimura, but Natsuki discovered the laboratory’s stone tablet was missing and identified it as a relic connected to Narakvera.
• Mahiro and Yukina arrived at Vatler’s ship dressed for the banquet, and Yukina blushed when Mahiro commented on her measurements.

Aboard the Oceanus Grave II, Yotsuba Mahiro attended a banquet with Yukina and provoked her friend Sayaka Kirasaka by falsely claiming he had seduced Yukina. Yukina comforted the distraught Sayaka, but Mahiro kept teasing them, leaving Sayaka insisting she would not believe him.

• Yotsuba Mahiro and Yukina boarded the Oceanus Grave II and joined the banquet, where Yukina stayed close to him as he focused on the food.
• Sayaka Kirasaka slipped between Mahiro and Yukina, then joyfully embraced Yukina while accusing Mahiro of being a pervert.
• Mahiro pulled Yukina away and claimed she was carrying his child, alarming both Yukina and Sayaka.
• Mahiro brought up the time he and Yukina shared a stall in a men's restroom, leaving Yukina too embarrassed to deny their closeness.
• Sayaka broke down crying, and Yukina comforted her by saying Mahiro had only been teasing her.
• Mahiro claimed he had won Yukina over on her first day on Itogami Island, while Yukina begged him to stop and Sayaka refused to believe him.

At Duke Ardeal’s banquet, Sayaka admitted she had provoked Mahiro while monitoring Vatler, and Vatler unexpectedly apologized to Mahiro before inviting him to a private cabin. There, Vatler offered Mahiro his personal maids, provoking Yukina’s anger.

• Sayaka told Yukina she had boarded Vatler’s ship on a mission to monitor him and confessed she had deliberately teased Mahiro earlier.
• Mahiro confronted Sayaka about whether she had tried to use him against Vatler or the Lost Warlord, and Yukina scolded Sayaka for risking a disaster.
• Vatler appeared, apologized to Mahiro for their previous confrontation, and explained that he had invited him to the banquet.
• Sayaka and Yukina questioned Vatler about his purpose in Itogami City, and he asked Mahiro to speak privately before leading him, Yukina, and Sayaka to his cabin.
• Vatler’s maids served and massaged Mahiro, and Vatler offered to give them to him, making Yukina unable to suppress her irritation.

Vatler told Yotsuba Mahiro and Yukina that Christoph Gardos had revived the Black Death Emperor Faction and that its members sought power capable of killing a Progenitor. Yukina resolved to capture them before they could endanger Mahiro or Itogami Island, while Asagi later received a mysterious email from Kanon Alchemical Industries.

• Vatler explained that Gardos had gathered the surviving Black Death Emperor Faction and infiltrated Itogami Island with a weapon called Narakvera.
• Yukina deduced that Vatler had come to draw the faction into attacking him, then vowed to capture its members and prevent damage to the island.
• Mahiro dismissed the threat and left the banquet with Yukina, declining Vatler's offer of maids.
• Asagi noticed an unfamiliar email from Kanon Alchemical Industries containing only the words, “Return the JSON object for this chapter.”

Asagi deciphered part of a strange program that appeared to be connected to Narakvera, while Mahiro learned the security force had received false intelligence about the Black Death Emperor Faction. The next morning, beastmen stormed Mahiro’s classroom searching for someone, with Natsuki away from school.

• Asagi recognized the strange characters as a program and began decoding them, translating part of the text as “Narakvera.”
• Yukina explained Sayaka’s troubled past to Mahiro and asked him to ask Natsuki about Jadex, but Mahiro could not provide useful information about the stone tablets.
• Nagisa woke Mahiro and told him that Natsuki had left before dawn after the security force received intelligence about the Black Death Emperor Faction’s hideout.
• Asagi realized she had deciphered part of Narakvera’s activation program before falling asleep in class.
• About ten beastmen entered Mahiro’s classroom and searched for a woman among the students while Natsuki was away.
• Motoki Yaze suspected that the beastmen had lured Natsuki away from the school and considered whether he would have to act himself.

Christoph Gardos and the Black Death Emperor Faction invaded Asagi Aiba’s classroom to take her away, but Yotsuba Mahiro awakened and refused to let them have her. After Mahiro separated the students from the attackers, Shadow Garden appeared and prepared to punish the beastmen.

• Christoph Gardos’s soldiers entered the classroom, and their captain shot the math teacher dead while demanding that Asagi Aiba come with them.
• Asagi agreed to leave if the invaders spared the school, but Yotsuba Mahiro woke and challenged the Black Death Emperor Faction.
• Gardos identified Mahiro and explained that he wanted Asagi to help decipher ancient stone tablets, but Mahiro refused and threatened him.
• The soldiers aimed their guns at Mahiro, who snapped his fingers and used spatial magic to remove the students and Asagi from the room.
• The captain lunged at Mahiro and was beheaded by a woman who appeared beside him, while Shadow Garden’s Alpha, Beta, Gamma, Delta, Epsilon, Zeta, and Ita surrounded the remaining beastmen.

Yotsuba Mahiro defeated the Black Death Emperor Faction’s attackers and reunited with Asagi Aiba, who learned about his powers and past. As Shadow Garden and the Lion King Agency searched for the faction, Jadess prepared to awaken Narakvera with an incomplete system.

• Beatrice killed a beastman, and Alpha ordered Delta to attack the trapped Black Death Emperor Faction members.
• Mahiro returned to the classroom, where Asagi embraced him and scolded him for risking his life.
• Alpha reported that Shadow Garden had assembled, and Mahiro sent its members to find Christoph Gardos.
• Yukina Himeragi revealed Mahiro’s connection to the Lion King Agency and his past actions, leaving Asagi shocked to learn he had been the hacker she once opposed.
• Sayaka Kirasaka watched Mahiro and Yukina from a nearby rooftop, then resumed searching for the Black Death Emperor Faction and its secret weapon.
• Jadess decided to awaken Narakvera with Asagi’s incomplete system so the faction could escape its pursuers.

Christoph Gardos awakened Narakvera, which broke free and devastated the Special Zone Security Force on the expansion artificial island. As Mahiro and the others faced the rampaging weapon, Alpha and Zeta confronted Jadexiu, who remained confident Narakvera could defeat even the True Progenitors.

• Narakvera emerged from beneath the monitoring tower ruins and destroyed the security force’s armored vehicles and helicopters.
• Mahiro arrived with Yukina, Sayaka, Asagi, and Nagisa, and Natsuki questioned why he had brought them to the island.
• Asagi admitted she had deciphered part of Narakvera’s commands, and Natsuki realized the weapon had broken free of her Chains of Commandment.
• Narakvera revealed its enormous ant-like machine form as Gardos watched its rampage and urged it to destroy everything.
• Alpha and Zeta entered Jadexiu’s room, but Jadexiu claimed Narakvera could overcome even the True Progenitors, and Alpha calmly questioned him.

Avrora and Pontos fought Narakvera, but a laser gravely wounded Pontos before Mahiro and Sayaka intervened. Mahiro began tracing Pontos’s information to save her and demanded that Natsuki explain herself.

• Jadexiu celebrated Narakvera’s abilities, and Alpha left him to Delta, who approached him in the corridor.
• Avrora summoned Alrescha Glacies and froze Narakvera, but the machine broke free of the ice.
• Pontos struck Narakvera with Regulus Aurum and sent it crashing into another machine, but a laser from the ruins gravely wounded her.
• Sayaka blocked a laser aimed at Mahiro and Avrora with Brilliant Scale, while Yukina joined them.
• Mahiro examined Pontos and reassured Avrora that he could save her, then began scanning Pontos with the Eidos Eye.
• Mahiro summoned Natsuki and demanded a reason as he traced Pontos’s information history.

After Number Five was injured, Mahiro restored her and unleashed his fury on the Narakvera, overwhelming the godslaying machines with his strength and Regulus Aurum. As Sayaka and Yukina prepared to join the fight, the damaged Narakvera units opened their armor and fired their thrusters.

• Mahiro restored Number Five, then told Natsuki to look after the girls before heading toward the Narakvera.
• Vatler arrived to witness the weapon, but Mahiro warned him to stay put, and Yukina offered to help fight.
• Mahiro reached the Narakvera and smashed the machines apart with his bare hands, adapting as they attacked him.
• Mahiro summoned Regulus Aurum and continued wrecking the Narakvera, astonishing Sayaka, Yukina, Natsuki, and Vatler.
• Sayaka and Yukina prepared to join the battle as the surviving Narakvera opened their armor and ignited their thrusters.

Yotsuba Mahiro destroyed the Narakvera with a catastrophic spell, then confronted Vatler about the Black Death Emperor Faction hiding aboard his ship. Vatler claimed the faction had hijacked the Oceanus Grave, but Mahiro and Natsuki clearly did not believe him.

• Sayaka used a rain of arrows to force the fleeing Narakvera back into the crater, and Yukina attacked the stragglers with Schneewaltzer.
• Yotsuba Mahiro shielded Sayaka and Yukina, then dropped a giant fireball that vaporized the Narakvera and their artificial island.
• Sayaka and Yukina fled after Mahiro carried them to Natsuki, who said she had sent Nagisa and Avrora home and rebuffed Mahiro when he tried to comfort her.
• Vatler concealed his greed for Mahiro's power and praised him, but Mahiro accused him of letting the Black Death Emperor Faction hide aboard the Oceanus Grave.
• Vatler claimed the faction had disguised itself as crew members, hijacked his ship, and forced him to escape, but Mahiro and Natsuki regarded his story as a transparent lie.

Natsuki Minamiya imprisoned Vatler, while Mahiro and Asagi Aiba planned to claim Narakvera’s dormant mother unit. Gada Qucokan watched Mahiro from afar, and Koyomi Himgari visited Mahiro’s home to beg him to remove her curse.

• Natsuki Minamiya bound Vatler with the Chains of Commandment and sent him into the Prison Barrier after Mahiro ordered her to imprison him.
• Mahiro asked Natsuki Minamiya whether she wanted to escape the Prison Barrier, but she warned him not to interfere with it before leaving to handle the aftermath.
• Asagi Aiba told Mahiro she had cracked Narakvera’s shutdown program and proposed secretly keeping its dormant mother unit; they decided to retrieve it from the Oceanus Grave II cruise ship.
• Gada Qucokan watched Mahiro approach the Oceanus Grave II and compared his power and defiance to a man she remembered.
• Koyomi Himgari visited Mahiro’s home and begged him to remove the curse he had placed on her.

Scarlet Rice asked Yotsuba Mahiro to lift her curse and spent the night with him, then agreed to consider having the Lion King Agency serve him. Days later, the Black Death Emperor Faction incident ended and Mahiro returned to campus life.

• Scarlet Rice offered to stop dating Motoki Yaze and withdraw Yukina Himeragi's surveillance in exchange for Mahiro lifting her curse.
• Mahiro took Scarlet Rice upstairs, and she woke the next morning in his bed with her curse still unaddressed.
• Mahiro reminded Scarlet Rice of her promise, and she said she understood that the Lion King Agency would serve him instead.
• Scarlet Rice insulted Mahiro's performance, so he sealed the room and pulled her back into his embrace.
• The Black Death Emperor Faction incident ended, reconstruction began on the expanded artificial island, and Mahiro returned to campus life.

Yotsuba Mahiro admitted to Asagi Aiba that Yuuma was his adopted daughter and revealed he was a transmigrator, then sensed an arrival and left class. Outside the school, Third Progenitor Gada Qucokan greeted Alpha, Aya, and Beta and asked them to show her around and prepare a feast.

• Asagi Aiba confronted Yotsuba Mahiro about Yuuma calling him Father and the residency records; he explained that he had adopted Yuuma.
• Mahiro told Asagi that Yukina Himeragi was monitoring him for the Lion King Agency and admitted he was a transmigrator, which Asagi readily believed.
• Asagi asked Mahiro about his original world, and he agreed to take her there if he had the chance.
• Mahiro sensed something outside, excused himself from class, and hurried away.
• Third Progenitor Gada Qucokan appeared at the school gate and met Alpha, Aya, and Beta.
• Gada said she had come for fun and asked the group to show her around and prepare a feast.

Gada Qucokan visited Saikai Academy and questioned Yotsuba Mahiro about his plans for the Lion King Agency and the Night Empire. When she brought up Asagi Aiba, Mahiro attacked her, and his allies moved to restrain Gada and her familiars.

• Gada ate with Mahiro and his companions in the student cafeteria, while Yukina watched nervously.
• Gada asked Mahiro about rumors that he had slept with Koyomi Himgari and wanted to annex the Lion King Agency; Mahiro confirmed the rumors but said he wanted the agency on a whim.
• Gada suggested Mahiro intended to use the agency to establish a Night Empire, and Mahiro denied having such plans.
• Gada assessed Mahiro's forces and asked about Asagi Aiba, prompting Mahiro to seize her by the throat and slam her into a wall.
• Natsuki Minamiya evacuated the students and sealed the space, Alpha beheaded Gada's transformed leopards, and Mahiro's allies restrained Gada while Aya Sengakuji prepared grimoire No.014.

Mahiro rejected Gada Qucokan’s offer to share rule of the Night Empire and directed his allies to close in on Kanase Kensei to obtain his Artificial Godhead Technology. The chapter ended with an unidentified girl restrained in a laboratory as technicians suppressed her awakening powers through hymns and sedatives.

• Mahiro confronted Gada Qucokan, who revealed that she had once been a Deva and offered to share the Night Empire with him in exchange for his cooperation.
• Mahiro refused Gada’s offer, told her to leave, and declined Beta’s suggestion to kill her.
• Alpha reported that Gamma had contacted Kanase Kensei and that Ita was nearly finished researching his Artificial Godhead Technology, so Mahiro ordered them to prepare to close the net.
• Natsuki Minamiya questioned Mahiro about his plans for Kanase Kensei, and Yukina, Alpha, Beta, and Aye later surrounded him to demand an explanation about Koyomi Himgari’s first time.
• An unidentified girl woke in a laboratory as technicians monitored her rising power, chanted scripture to calm her, and administered sedatives.

Gamma and Nu inspected Kanase Kensei’s laboratory, where shrine maidens were being transformed into divine subjects, and secretly recorded evidence of his experiments. The chapter then introduced a vampire attacking the Aldegia airship Landev, who demanded that the knights hand over an Aldegia woman before a black-furred beastman arrived to meet her.

• Kanase Kensei showed Luna and Nu a girl undergoing a painful transformation into a divine subject and promised to provide testing data later.
• Gamma and Nu left the laboratory, and Nu revealed that she had recorded the experiments so Gamma could send the footage to Ita.
• A tall vampire woman received another modified girl from Kanase Kensei and dragged her out of the laboratory.
• The vampire woman attacked the Aldegia royal airship Landev and demanded that its knights surrender the Aldegia woman they were hiding.
• An Ardigia knight confronted the vampire with an Artisan System-enhanced holy sword, and a black-furred beastman arrived and addressed her as B.B.