Chapter Summaries

Makima told Asaba Kotone that the Nostradamus Prophecy foretold humanity’s extinction and the rise of devils, and asked him to help avert it. She revealed that she wanted to save humanity, especially her family, leaving Kotone to consider how the prophecy might connect to the Four Horsewomen’s conflicting plans.

• Makima explained that the Nostradamus Prophecy predicted the end of humanity and the beginning of the age of devils.
• Asaba Kotone asked whether Makima wanted him to use Pochita’s power to prevent the catastrophe, and Makima said his power alone might not be enough.
• Makima moved from speaking face-to-face with Kotone to sitting on his thighs as they continued their conversation.
• Kotone asked why Makima wanted to stop the prophecy, and Makima said she did not want humanity, especially her family, to die.
• Kotone speculated that Makima, Kiga, and Yoru had different plans for preventing the prophecy, while the Death Devil’s position remained unclear.

Asaba Kotone proposed a combat power ranking system for Devil Hunters and Devils, and discussed how Public Safety could use existing kill records to set the ranks. He warned Kirisū Yuki that the greatest threats remained the Primal Devils, the Four Horsewomen of the Apocalypse, and the approaching Nostradamus Prophecy.

• Kirisū Yuki told Asaba Kotone that people had accepted the new policies he recommended.
• Asaba Kotone suggested ranking combat power from D to SSS, with clear standards, recruitment requirements, and rank-based salaries and benefits.
• Kirisū Yuki proposed using Devil-hunting records from Public Safety and the Private Association to assign rankings.
• Asaba Kotone identified Gun Devil Flesh holders, powerful Devils, the Primal Devils, and the Four Horsewomen as continuing threats.
• Asaba Kotone said the Nostradamus Prophecy was the most dangerous threat and looked forward to seeing what it would bring.

Asaba Kotone told Kirisū Yuki that the Nostradamus Prophecy might become real and promised to deal with it when the time came. After returning to Tokyo, he asked Yuki for death row inmates so he could use their lifespans to power an ability gained through a devil contract.

• Asaba Kotone explained that the Nostradamus Prophecy might have become a devil that would bring the King of Terror into the human world.
• Kirisū Yuki trusted Asaba Kotone to handle the prophecy when the time came, while he focused on the War Devil and the Famine Devil.
• Asaba Kotone returned to Tokyo with the others and resumed his duties.
• Asaba Kotone asked Kirisū Yuki for death row inmates, explaining that a devil contract required him to spend lifespan and that he intended to absorb theirs.

Asaba Kotone gathered more than ten thousand years of lifespan from death row inmates to prepare for using the Spear of Longinus, while helping prevent Devils from harming students at Sakuradai High School. The chapter ended with Denji preparing for an experiment involving the Sword Devil’s heart, with Elena close by his side.

• Kirisū Yuki approved Asaba Kotone using Tokyo Public Safety’s death row inmates to gather lifespan for Devil Power.
• Asaba Kotone absorbed the prisoners’ lifespans and left with more than ten thousand years in reserve.
• With the Future Devil’s help, Asaba Kotone’s group foresaw and killed the Devils that appeared at Sakuradai High School before any students were hurt.
• Asaba Kotone learned that Denji was preparing to undergo an experiment with the Sword Devil’s heart.
• Asaba Kotone recalled Denji’s visits, his new friends, and Elena’s growing affection for him.

Asaba Kotone visited Denji at the Experimental Base before his Devil Heart experiment and found him getting a foot massage from Elena. He checked on Denji’s safety, while Elena agreed to continue the massage later when they were alone.

• Asaba Kotone rushed to the Experimental Base in the Soviet Union to make sure Denji’s heart experiment went safely.
• Asaba Kotone found Elena standing on Denji’s back and giving him a foot massage after losing a bet.
• Elena hurriedly explained that Denji had not forced her, while Denji said their half-hour massage was not over.
• Asaba Kotone said he had only come to check on Denji before the experiment scheduled for the next day.
• Elena refused to continue while Asaba Kotone watched, then quietly told Denji they could resume when they were alone.

Asaba Kotone learned that Elena’s heart experiment was scheduled for the day after tomorrow and decided to watch over it. Denji’s concern for Elena reassured her, and Kotone promised he could keep them both safe.

• Elena told Denji that her heart experiment would take place the day after tomorrow.
• Asaba Kotone decided to stay with Elena during the experiment in case the changes he had caused put her at risk.
• Denji asked whether anyone could die during the experiment, revealing his worry for Elena.
• Asaba Kotone promised he could guarantee their safety, and Denji trusted him.
• Elena realized Denji had been worried about her and secretly felt happy, though she told him she did not need his concern.

Asaba Kotone accompanied Denji to the laboratory for the heart experiment and reassured the uneasy Sword Devil's heart. The experiment finished successfully, and Denji only learned it was over after waking from anesthesia.

• Asaba Kotone entered the laboratory with Denji and saw the Sword Devil's heart, choosing not to use Genjutsu.
• The Sword Devil's heart grew nervous around Asaba Kotone, who reassured it and asked how it was getting along with Denji.
• Denji lay down for the experiment, trusting Asaba Kotone to keep him safe.
• The Sword Devil's heart cooperated with the scientists because it feared Asaba Kotone would kill it if it refused.
• The scientists completed the heart experiment successfully, and Denji woke from anesthesia surprised that it was already over.

Asaba Kotone told Denji that the experiment had succeeded and taught him how to transform into a sword weapon human and back. Denji returned to his normal human appearance, while the scientists became more convinced that Asaba Kotone was an important military figure.

• Asaba Kotone explained that Denji had become a sword weapon human with powerful self-healing and could live forever.
• Asaba Kotone told Denji to pull off his right hand to transform, and Denji discovered a short sword emerging from his wrist.
• A burst of pain accompanied Denji’s transformation as a scabbard and two swords emerged from his head, and he became a sword weapon human.
• Denji admired his transformed appearance, then asked whether he could turn back into a human.
• Asaba Kotone taught Denji how to revert, and Denji’s swords and devil-like head disappeared as his wounds healed.
• The scientists watched in astonishment and grew more convinced that Asaba Kotone had a mysterious military identity.

After his heart experiment, Denji worried about Elena's upcoming experiment until the Sword Devil spoke to him from inside his body. The Sword Devil revealed that Asaba Kotone was the Gun Devil, but Denji refused to believe it.

• Denji stayed at the laboratory because Elena's heart experiment was scheduled for the next day.
• The Sword Devil told Denji that Elena would be safe because the Whip Devil would not dare offend the Gun Devil.
• Denji realized the Sword Devil could still speak to him after their hearts fused.
• The Sword Devil revealed that Kotone was the Gun Devil.
• Denji insisted Kotone was a good person and rejected the Sword Devil's claim.

Denji asked Asaba Kotone whether he was the Gun Devil, and Kotone confirmed that the Gun Devil’s heart was inside him. Denji accepted the explanation and reassured Elena that her experiment would go smoothly with Kotone there.

• Denji whispered to Asaba Kotone and asked whether he was really the Gun Devil.
• Asaba Kotone confirmed that the Gun Devil’s heart was inside him, and Denji accepted that he remained in control of himself.
• Denji asked the Sword Devil whether the Gun Devil was powerful enough to intimidate the Whip Devil, and the Sword Devil agreed.
• Denji took Elena’s hands and told her that her experiment the next day would go smoothly with Asaba Kotone present.
• The author explained that updates would remain slow while they worked out the manga’s second-part plot.

Elena completed the Whip Devil heart experiment and became a Weapon Human. Denji chose to return to Tokyo with Asaba Kotone, and Elena agreed to go with them as they prepared to leave the Experimental Base.

• Elena's experiment went smoothly, and she learned to transform into her Whip Weapon Human form.
• Asaba Kotone asked Denji whether he wanted to return to Tokyo or stay, and Denji chose to go with him.
• Denji asked if Elena could come too, and Asaba Kotone said she could leave if she wanted.
• Elena agreed to leave with Denji and Asaba Kotone, who informed the scientists that he was taking the two test subjects.
• Asaba Kotone told Denji and Elena to close their eyes before he took them back to Tokyo.

Asaba Kotone brought Denji and Elena to his home in Tokyo, where Reze teased Elena about being Denji’s girlfriend. Elena’s flustered reaction revealed how much she liked him, but neither she nor Denji made their relationship official.

• Asaba Kotone brought Denji and Elena to his Tokyo home and said Elena could attend school there with Denji.
• Reze met them and suspected Kotone had brought home another girl, so he explained that Elena was from the Soviet Union and was Denji’s girlfriend.
• Denji shamelessly agreed with Kotone’s claim, while Reze watched Elena’s glances and realized she liked Denji.
• Reze switched to Russian and teased Elena by asking whether she was Denji’s girlfriend.
• Elena blushed and objected when Reze suggested other girls might pursue Denji, while Reze told her to say it to Denji himself.

Asaba Kotone brought Denji and Elena to Sakuradai High School to enroll them, and they chose to attend together. Principal Yoshimura arranged for them to join the first-year college preparatory class as transfer students.

• Reze teased Elena, then privately encouraged her to seize her chance with Denji.
• Asaba Kotone asked Denji and Elena whether they wanted to continue school, and both agreed to attend together.
• Asaba Kotone took them to Sakuradai High School and asked Principal Yoshimura to enroll them.
• Denji chose a college preparatory class, and Elena chose the same class as him.
• Principal Yoshimura enrolled Denji and Elena as transfer students in first-year Class 3.

Denji and Elena arrived in Class 3, first year, and introduced themselves to their new classmates. Elena felt more at ease after the students responded warmly, though that friendliness might only be superficial.

• Asaba Kotone brought Denji and Elena to their assigned classroom, where their homeroom teacher asked them to introduce themselves.
• Denji introduced himself and boasted that he was a skilled Devil Hunter who could protect the class.
• The students reacted with surprise and debated whether Denji was really a Devil Hunter, while he enjoyed the attention.
• Denji introduced Elena as a Soviet student who could not speak much Japanese, then helped her address the class.
• Elena greeted her classmates in basic Japanese and felt less nervous after they praised her language skills.

Asaba Kotone asked Kirisū Yuki to recruit Denji and Elena into Tokyo Public Safety's Special Division for Devil Affairs, but she required them to first build a record of killing Devils. Asaba revealed they were Weapon Humans like Reze, and Kirisū Yuki questioned whether he had poached the Soviet Union Military's remaining recruits.

• Asaba Kotone arranged for Denji and Elena to live together in his apartment building and decided to seek jobs for them in Tokyo Public Safety.
• Kirisū Yuki refused to immediately approve the two sixteen-year-old high school students, saying they needed a record of killing Devils.
• Asaba Kotone agreed to have Denji and Elena build up that record, confident their abilities would make it easy.
• Kirisū Yuki guessed that the newcomers might be Weapon Humans like Reze, and Asaba confirmed it.
• Kirisū Yuki asked if Asaba had poached the Soviet Union Military clean, and he insisted he had brought the two back openly and without objection.

Asaba Kotone agreed to prove Denji and Elena were Weapon Humans so they could become Public Safety Devil Hunters. Kirisū Yuki guessed that Asaba was a Weapon Human too, but he refused to reveal which Devil’s heart he had.

• Kirisū Yuki told Asaba Kotone that proving Denji and Elena were Weapon Humans would be enough for them to join Public Safety.
• Asaba agreed to bring Denji and Elena to Tokyo Public Safety after school and confirmed to Kirisū Yuki that he was a Weapon Human.
• After their classes, Asaba asked Elena how school had gone and warned both her and Denji not to tell others they were Weapon Humans.
• Asaba took Denji and Elena to Tokyo Public Safety to prove they were Weapon Humans and become Public Safety Devil Hunters.

Asaba Kotone brought Denji and Elena to Kirisū Yuki so she could confirm they were Weapon Humans. After seeing their transformed forms, Kirisū asked to see Kotone transform too, but he refused.

• Asaba Kotone introduced Denji and Elena to Kirisū Yuki, who wondered how the Japanese Denji had undergone Weapon Human experiments with the Soviet Union Military.
• Kirisū Yuki found Denji's name in a file about Asaba Kotone and reconsidered how Denji had ended up in the experiments.
• Asaba Kotone signaled Denji and Elena to transform, revealing Denji as the Sword Devil Weapon Human and Elena as the Whip Devil Weapon Human.
• Kirisū Yuki examined their transformed forms and identified their Devil hearts, which Asaba Kotone confirmed.
• Kirisū Yuki asked Asaba Kotone to transform so she could see his Weapon Human form, but he refused.

Asaba Kotone officially brought Denji and Elena into the Special Division for Devil Affairs and explained their duties and Denji’s need to gain combat experience. When a devil appeared nearby, Kotone teleported them to its location, where they found a fast-moving sausage-shaped devil chasing people.

• Kirisū Yuki completed the procedures that officially enrolled Denji and Elena in the Special Division for Devil Affairs.
• Asaba Kotone explained that the division handled elite devils across Tokyo and warned Denji not to push himself before gaining combat experience.
• Denji resolved to hunt nearby devils, hoping to become popular, though he remembered Kotone’s advice to keep his Weapon Human identity secret.
• Asaba Kotone spotted a devil and teleported Denji and Elena to its location.
• Denji and Elena saw a sausage-shaped devil rapidly rolling after fleeing people.

Denji began practicing as a Sword Weapon Human by fighting a Sausage Devil while Elena watched. After his first strike split the devil in two, he learned it could regenerate and planned to cut it into pieces.

• Asaba Kotone identified the Sausage Devil as a suitable practice opponent and told Denji and Elena to take turns fighting it.
• Denji transformed into a Sword Weapon Human and swiftly cut the Sausage Devil in half.
• Denji celebrated his strength, but the Sword Devil warned him that the Sausage Devil was not dead.
• The Sausage Devil's two halves regenerated and began moving as separate bodies.
• The Sword Devil explained that Denji had to cut the Sausage Devil into countless pieces to stop it regenerating, and Denji set out to do so.

Denji defeated the Sausage Devils and confirmed with the Sword Devil that they were dead for good. After lunch, Asaba Kotone took Denji and Elena to school, where Denji showed his classmates his Public Safety Devil Hunter ID.

• Denji chopped the Sausage Devils into tiny pieces until they lost their vitality and could no longer regenerate.
• The Sword Devil confirmed that the Sausage Devils were dead for good.
• Denji returned to Asaba Kotone, who praised his fighting and told Elena there was no need to train against a devil yet.
• Asaba Kotone used the Kamui Dimension to take Denji and Elena to lunch, then teleported them to school on time.
• Denji showed his classmates his Public Safety Devil Hunter ID, and they reacted with surprise.