Chapter Summaries

Asaba Kotone rejected the Death Devil’s offer and used Intangibility to avoid being killed again, while the Death Devil identified the ability’s limitations. Below, the Death Devil’s slain subordinates returned through gates of Hell, leaving the Devil Hunters despairing and the Horsemen relying on Kotone to face Death.

• Asaba Kotone refused to become the Death Devil’s exclusive toy and activated Intangibility.
• The Death Devil observed that Kotone vanished from her detection in that state but could still be seen, and guessed that he could not act while intangible.
• The Falling Devil slaughtered the Death Devil’s subordinates, but gates of Hell opened and brought the slain devils back to life.
• Makima told Kiga that they had to rely on Kotone to deal with Death because their eldest sister was too powerful to confront.
• Kiga remarked that Death had arrived earlier than expected and asked Makima what she meant by calling Kotone “Darling.”

Makima and Kiga discussed Makima’s affection for Asaba Kotone, while Death dismissed the Falling Devil’s rampage as harmless to her endless-respawning subordinates. Yoru Mitaka arrived to confront Asaba Kotone but was caught by Falling’s power, and Death’s attack sent Falling back to Hell, leaving Yoru falling from the sky.

• Makima told Kiga that Asaba Kotone felt like family to her, and Kiga questioned whether their own bond was family too.
• Asaba Kotone tried to distract Death by asking whether she would stop the Falling Devil from killing her subordinates, but Death said they would keep respawning.
• Yoru Mitaka arrived and declared Asaba Kotone her target, but Falling’s power lifted her upside down before she could explain.
• Death struck Falling with a devastating attack, forcing the gravely injured Primal Devil back into her miniature figurine form and returning her to Hell.
• Yoru was freed from Falling’s influence but began plummeting from the sky.

Asaba Kotone used Genjutsu combined with Makima’s power of control to disrupt the Death Devil’s plan to make humanity evolve. Though he failed to control her, the attack briefly changed her thinking and left her willing to consider his argument.

• As Yoru Mitaka fell from the rooftop, the Death Devil caught her and carried her safely down.
• Asaba Kotone seized the opening and used Genjutsu combined with Makima’s power of control on the Death Devil.
• The Death Devil resisted full control but admitted Asaba Kotone had nearly subdued her.
• Asaba Kotone argued that Makima and Kiga also opposed the Death Devil’s plan, and her resolve wavered under the lingering effect of his attack.

Asaba Kotone persuaded the Death Devil to delay her plans for one month, and she ended the worldwide rampage, though the dead could not be restored. As Kotone rested at home, Death teased Makima by clinging to him during a meeting with the Four Horsewomen of the Apocalypse.

• The Death Devil agreed to consider Asaba Kotone’s idea and gave him one month, asking him to help pass the time meanwhile.
• The Death Devil restored the world to its previous state, but the dead remained dead as New Humans and the devils and Hell’s doors disappeared.
• Makima and Kiga recognized that the turmoil had subsided, and Makima confirmed Kotone had used a power beyond control to affect Death.
• Japan’s casualties reached hundreds of thousands, and Asaba Kotone rested at home while the Four Horsewomen gathered for a meeting.
• Death hugged Asaba Kotone to provoke Makima, who called out her deliberate display.

Asaba Kotone discussed the return of the people who had died and his plan to explain the choice of becoming new humans to the world. He planned to rest for the day and brief Kirisū Yuki the next day, but that night Reze questioned whether the Death Devil should stay with them.

• Asaba Kotone asked when the people who had died would return, and the Death Devil said they would start coming back soon.
• Asaba Kotone asked about the Death Devil’s plans, and she said she intended to have fun in the Human World.
• Asaba Kotone said he would let everyone choose whether to become new humans once the dead returned, and planned to brief Kirisū Yuki the next day.
• Reze warily asked whether the Death Devil should stay with them in Asaba Kotone’s bedroom.

The Death Devil named herself Setsuna and insisted on staying at Asaba Kotone’s house, where she slept on top of him. After dinner, Asa Mitaka walked with Kiga, who kept urging her to call her big sister despite Yoru’s objections.

• Reze questioned why Makima and Asaba Kotone would not stop the Death Devil from staying, but neither could intervene.
• The Death Devil chose the name Setsuna, and Asaba Kotone agreed to use it.
• Setsuna ignored Asaba Kotone’s objections and lay on top of him in bed, drawing reproachful looks from Reze and Makima.
• Asa Mitaka and Kiga left the Asaba house after dinner and walked together.
• Yoru warned Asa Mitaka not to listen to Kiga, so Asa refused to call her big sister and tried to change the subject.

After a sleepless night being pinned between Reze, Makima, and Setsuna, Asaba Kotone went to Kirisū Yuki to explain the recent disaster and ask her to help with what came next. Kirisū agreed to speak with her father, though Asaba warned that he would make the Cabinet listen if it objected.

• Asa Mitaka ran off after Yoru Mitaka insisted that she refuse Kiga’s request.
• Asaba Kotone escaped Setsuna’s hold with Intangibility and left to handle serious business.
• Asaba Kotone teleported to Kirisū Yuki’s office, where she asked what had happened during the disaster.
• Asaba Kotone recounted the events and left the next steps to Kirisū Yuki.
• Kirisū Yuki agreed to talk with her father, while Asaba Kotone said he would force the Cabinet to listen if necessary.

Asaba Kotone inspected the first people who had entered symbiosis with Devils after dying in Setsuna’s Death Domain. He tested their powers, and the chapter ended when the Devil inside an edgy middle-school boy complained about the boy’s embarrassing theatrics.

• Setsuna told Asaba Kotone that the first batch of New Humans had all survived symbiosis, though they still needed time to adjust.
• Setsuna brought Asaba Kotone into her Death Domain and summoned a crowd of the newly created New Humans.
• Asaba Kotone questioned three people: an edgy middle-school boy, a shy girl living with the Rabbit Devil, and a worried office worker who wanted to return to his family.
• Asaba Kotone reassured the office worker that his wife and daughter were safe if they had not been brought into the Death Domain.
• The boy performed a dramatic gesture to demonstrate his Devil Power, and a mouth appeared on his face to scold him for being embarrassing.

Asaba Kotone arranged for Setsuna to return people from the Death Domain to the Human World and pushed Japan into holding a vote on coexistence with devils. With a worldwide vote proving difficult to organize, he proposed appearing on television with Setsuna to demonstrate their power, and Setsuna agreed in exchange for a secret condition.

• Asaba Kotone learned that Setsuna and the boy each had half control over their shared body, then asked Setsuna to return people to the Human World one by one.
• After Kirisū Yuki reported that the Prime Minister had ignored her father's proposal, Asaba Kotone used Genjutsu to control the Cabinet and make its members approve a vote.
• Japan held a real-name vote within three days, with anyone who did not vote counted as accepting coexistence with devils.
• Asaba Kotone worried that a worldwide vote would require him to control too many leaders and considered how to make people take the vote seriously.
• Asaba Kotone proposed appearing on television with Setsuna to demonstrate their power, and Setsuna agreed on the condition that she kept secret for now.

Asaba Kotone reviewed the first day of voting on accepting the Death Devil and prepared to appear on television with Setsuna to persuade the public. While waiting for the media team at Tokyo Public Safety, he introduced Setsuna to Kirisū Yuki and concealed how he had made the Cabinet obey him.

• Asaba Kotone learned that only 5.763% of the first day's voters were willing to accept the proposal, and Setsuna expressed dissatisfaction with the result.
• Setsuna agreed to appear with Asaba Kotone on television, and he warned her not to kill anyone in public.
• Asaba Kotone and Setsuna waited in Kirisū Yuki's office for a media team to arrive at Tokyo Public Safety.
• Kirisū Yuki met Setsuna and marveled that the Four Horsemen were four beautiful women; Setsuna complimented her, and Kirisū Yuki objected to being called a little girl.
• Kirisū Yuki asked how Asaba Kotone had persuaded the Cabinet to change its position, and he said he had forced them to obey without revealing his Genjutsu.

Asaba Kotone and Setsuna gave a live interview about the recent disaster, while Setsuna teased Asaba by pretending to be his girlfriend. Asaba revealed that Setsuna was the Death Devil, and she opened a gate that sent terrifying devils into the Human World.

• Asaba Kotone denied the reporter's suggestion that Setsuna was his girlfriend, but Setsuna hugged him and teased him on live television.
• Reze recognized Setsuna's teasing, while Makima crushed a glass and Kobeni Higashiyama learned that Setsuna was Makima's older sister, the Death Devil.
• The reporter asked Asaba Kotone about the recent disaster, and he said the King of Terror was the Death Devil arriving from Hell and that humanity would have been destroyed if she had not compromised.
• Setsuna declared that she was the Death Devil and opened a skull-filled gate, from which a swarm of devils poured into the Human World.

Setsuna and Asaba Kotone used a worldwide Devil invasion to pressure humanity into voting, while Setsuna ordered the Devils not to harm people. Voting proceeded smoothly as governments urged participation and warned Devil Hunters not to attack her Devils.

• Setsuna's Devils descended into the Human World but did not harm humans, and Setsuna said she had ordered them to act peacefully or die.
• Setsuna threatened to send more Devils and have them slaughter humans unless people voted, and the threat aired live on television.
• Setsuna said her Devils would remain until worldwide voting ended and would fight back if Devil Hunters attacked them first, then she and Asaba Kotone left.
• As voting continued, Setsuna deployed more Devils around the world, where they also helped humans hunt Devils that attacked people.
• Governments forbade Devil Hunters from attacking Devils marked by Setsuna and encouraged citizens to vote.

Setsuna transformed humans who chose coexistence with Devils into Half-Humans, while Asaba Kotone and his allies maintained order amid continuing conflict. Makima discovered she could have a child with Asaba Kotone, and the chapter ended with the author’s note announcing the story’s conclusion.

• Setsuna transformed the roughly 30% of humans who chose coexistence with Devils into Half-Humans, while conflict between humans and Half-Humans grew.
• Asaba Kotone stayed with Tokyo Public Safety and worked with Makima, Asa Mitaka, Kiga, Reze, Setsuna, and others to maintain peace in the area.
• Makima, Kiga, and Setsuna wondered whether humans and Devils could have children, and Makima and Kiga acted on the question with Asaba Kotone.
• Makima later discovered a little life in her arms and concluded that humans and Devils had no reproductive isolation.
• The author apologized for the rushed ending, described their other writing projects, and thanked readers for following the novel.