Chapter Summaries

Rias and Sona Shitori reassessed Leo’s growing strength while the three debated why the Old Satan Faction had trapped them in a Labyrinth Space. They concluded that only a faction splinter may have launched the attack and hurried onward to find their servants and escape.

• Rias and Sona Shitori suspected Leo had grown far stronger after he killed the Vermilion Dragon, and Sona considered how his Peerage Transformation trait may have raised his power further.
• Rias and Sona Shitori agreed they needed to locate the Labyrinth Space’s owner or reunite with their servants, then contact the Underworld for help.
• Leo, Rias, and Sona Shitori debated whether the attackers wanted to use them as bait and concluded the trap seemed designed to wear them down rather than take them hostage.
• Leo reasoned that the Old Satan Faction’s powerful Maou-bloodline heirs were unlikely to have approved the attack, so a faction splinter may have acted independently.
• Leo raced through the passage to find Yukino and the others, and Rias and Sona Shitori followed him to the next room, where another trial awaited.

Leo, Rias, and Sona survived three more Labyrinth trials and confronted Raife Trix, a surviving member of the Old Satan-aligned Trix Clan who had set the death trap to kill them. Their confrontation began with a surprise attack from Sona, but Raife revealed himself to be an Ultimate-Class Devil.

• Leo destroyed the Ice Dragon and helped Sona defeat her enemy before Rias finished off her own dragon.
• Leo dispersed the corrosive miasma in the second room, allowing Rias and Sona to recover and continue.
• Rias and Sona joined forces to destroy the Light Magic Circle in the third room, and the group reached the Master Chamber.
• Raife Trix introduced himself as the sole survivor of the Trix Clan and explained his hatred of Sona, Leo, and Rias.
• Sona launched a concealed water-spike attack at Raife, but he blasted it apart with Demonic Power that revealed he was an Ultimate-Class Devil.

Leif revealed that the maze had been a test for the True Satan Faction, then attacked Leo, Rias, and Sona Shitori with his Devils. Leo’s power rose to the Ultimate-Class level, and he took flight to face Leif as an Eight-Winged Devil.

• Leif summoned Devils from the True Satan Faction and ordered them to bombard Leo, Rias, and Sona Shitori.
• The three defended themselves, but Leif fired a massive Magic Bullet at Sona, so Leo switched places with her and blocked it.
• Leo, Rias, and Sona turned their defensive circles into cannons and blasted through the Old Satan Faction’s ranks.
• Leif repeatedly attacked Leo, but Leo’s defense held as his magic power climbed to the Ultimate-Class level.
• Leo aimed at the surviving Devils, then fought back when Leif charged him, and revealed that he had four pairs of Devil Wings.

Leo revealed that he was an Eight-Winged Devil, driving Leif into a jealous rage, then overpowered him with precise attacks. As Leo prepared to finish Leif, Leif pulled a small bottle from his chest, making Leo pause.

• Leif became enraged and jealous after seeing Leo's eight wings and charged at him with a barrage of magic attacks.
• Leo appeared behind Leif, struck him, and pierced him with several tightly compressed Magic Bullets.
• Leo explained that his strength exceeded Leif's and knocked him into the ground with an invisible Magic Impact.
• As Leo prepared a finishing blow, Leif pulled a small bottle from his chest, and Leo recognized it and paused.

Leif swallowed a strange black snake-like object and gained power rivaling a Ten-Winged Ultimate-Class Devil, then showed Leo and Rias the peerages’ desperate battles throughout the Labyrinth Space. The final projection revealed Yukino gravely wounded and facing Sharon, whose Anti-Devil Exorcism Swords had grown stronger by consuming Devil flesh and blood.

• Leif swallowed the black object, his demonic power surged, and he challenged Leo while threatening Rias and Sona’s peerages.
• Leif opened magic circles showing Akeno, Tsubaki, Utaha, Koneko, Tsubasa, Mahiru, Reya, Momo, Asuna, Tomoe, Yuuto, and Ruruko struggling in the Labyrinth Space.
• Leo, Rias, and Sona saw Yukino leaning against a wall with a severe abdominal wound as Sharon confronted her.
• Sharon explained that her Anti-Devil Exorcism Swords converted Devil flesh and blood into power, and admitted she had used her own flesh to grow stronger.

Sharon revealed why she could wield the corrupting Devil Slayer and used it to drive Yukino into a desperate fight. As Leif taunted Leo over his endangered Peerage, Leo awakened his Sacred Gear, overwhelmed Leif, and tore off his wings.

• Sharon explained that the Church had discarded the Devil Slayer because it corrupted its wielder, but she chose it because her Devil Factor let it strengthen her as it consumed her flesh.
• Sharon attacked Yukino with the Devil Slayer, forcing the wounded Yukino to summon the Ice Princess and keep fighting while Leo watched her fall into danger.
• Leif taunted Leo about his Peerage and declared that Leo and the others would die in the Labyrinth Space.
• Leo awakened his Sacred Gear and attacked Leif with lightning, breaking through his defenses and deflecting his Magic Bullets with a whirlwind.
• Leif unleashed a barrage of magic across the Master Chamber, but Leo pursued him through the explosions, buried him under rocks, and tore off his wings.

Leo fought Leif above the Master Chamber, overcoming his desperate overuse of Demonic Power with Zenith Tempest’s control over natural attributes. He destroyed Leif and left Rias and Sona Shitori battling the remaining Old Satan Faction Devils.

• Leo tore off Leif’s remaining Devil Wings, but Leif broke free and unleashed Demonic Power beyond what his body could withstand.
• Leif attacked Leo with massive beams, while Leo used Zenith Tempest to counter with flames, lightning, ice, storms, rocks, and floods.
• Rias and Sona Shitori kept their distance from Leo and Leif’s battlefield and fought the surviving Old Satan Faction Devils.
• Leo told Leif that his defeat was the consequence of targeting their group and ordered him to repent in Hell.
• Leo’s natural disasters swallowed Leif and extinguished his Demonic Power completely.

The Maou Territory leaders discussed an Old Satan Faction attack on Rias Gremory, Sona Sitri, Leo Eligos, and their peerages, who escaped after Leo defeated the mastermind. The leaders praised Leo, while the blue figure broke down over rumors that Sona might be betrothed to him, and the meeting moved on without her.

• The red figure told the other leaders that Old Satan Faction members had attacked Rias Gremory, Sona Sitri, Leo Eligos, and their peerages at Kuoh Academy and trapped them in a Different Dimension.
• The red figure reassured the others that Rias and the group had survived, then shared Sona Shitori's report on the attack and their escape.
• The leaders learned that Leo had defeated the mastermind, seized control of the Labyrinth Space, and helped the group rescue their peerages.
• The orange and green figures said Sona's family might arrange her betrothal to Leo, and the blue figure angrily objected before collapsing in tears.
• The other three leaders ignored the blue figure's outburst and continued with business.

The four Fake Satans discussed the Old Satan Faction’s renewed activity and the mysteries behind its attack, while the Red Figure prepared to visit the Human World and meet Sona and Leo. Elsewhere, the True Satan Faction and another group discussed their next moves after learning about the Eligos Clan and Zenith Tempest.

• The Red Figure, Green Figure, and Orange Figure decided to investigate the Old Satan Faction’s movements, its allies, and the source of Raife Trix’s power boost.
• The Red Figure volunteered to visit the Human World, and the Blue Figure reluctantly stayed behind to finish her diplomatic mission before pursuing Sona later.
• The Red Figure and the others praised Leo’s Longinuses and abilities, and the Green Figure asked him to warn Leo about dangerous attention, especially from a Fallen Angel.
• The True Satan Faction’s members dismissed the failed Trix family fighter and planned to make their presence known after testing the Underworld.
• A separate group discussed its returning new member, discovered that Zenith Tempest had appeared, and one member said they wanted to fight him.

While recovering at Kuoh Academy, Yukino heard Leo explain the injuries suffered by their allies and learned that Kiba and Nimura remained in grave danger. Leo praised Yukino for defeating Sharon Holy Grail, but her response turned somber as she began telling him what had happened during their fight.

• Leo told Yukino that she needed to rest at Kuoh Academy while she recovered from her injuries.
• Leo described the condition of the other Peerages and said Rias and Sona would seek Tears of the Phoenix for Kiba and Nimura.
• Yukino said Kiba and Nimura needed the healing medicine more than she did, and Leo urged her to recover for her own sake and his.
• Leo praised Yukino for defeating Sharon Holy Grail and opening the passage to the next room despite her injuries.
• Yukino grew somber and began telling Leo what had happened during her fight.

Yukino fought Sharon in a frozen battlefield and was badly injured as Sharon repeatedly broke through her defenses. As Sharon prepared to attack again, Yukino questioned her hatred of Devils, and Sharon challenged Yukino’s assumption that the Church had hurt her.

• Yukino used Ice Princess to unleash blizzards and icebergs, but Sharon charged through the freezing storm unharmed by black mist.
• Sharon reached Yukino and battered her through layers of ice, leaving her hands bloodied and kicking her across the frozen floor.
• Yukino refused to give up, saying she would not lose to Sharon twice, while Sharon warned that Yukino could not decide whether to survive.
• Yukino stalled Sharon by asking why she served the Church and why she was so fixated on Devils.
• Sharon asked why Yukino assumed the people who hurt her were from the Church rather than Devils.

Sharon revealed that Devils had made her a test subject while trying to create beings called “Beyond the Limits,” and that the Church rescued her after the experiments killed everyone else. She explained that her hatred drove her to become a Devil Slayer, then challenged Yukino to hate her for being a Devil as Sharon prepared to act on her revenge.

• Sharon told Yukino that Devils, not the Church, had injected Devil Factor into her during experiments on beings of many races.
• Sharon explained that the Devils sought to create abnormal beings who could surpass Pure-blood Devils and even the Satans, and the Church destroyed their laboratory after discovering it.
• Sharon said she joined the Church and became an exorcist to gain the power to destroy Devils, despite knowing the Church’s own corruption.
• Yukino questioned whether Sharon should blame all Devils for the actions of a few, while recognizing the suffering that had shaped her hatred.
• Sharon rejected righteousness as a reason to restrain her revenge, and the black aura around her surged as she told Yukino to hate being a Devil.

Yukino Yukinoshita told Leo that Sharon Holy Grail was a survivor of an Artificial Transcendent Experiment, and Leo considered how the revelation connected to hidden forces in the Devil world. The chapter ended with Leo asking how Yukino had defeated Sharon, and Yukino saying she had treated Sharon the way Sharon treated her.

• Leo recalled the three known Transcendents and the future hierarchy of power, realizing Transcendents stood far above ordinary Maou-Class beings.
• Yukino told Leo that Sharon Holy Grail had survived a different Artificial Transcendent Experiment and warned him that the Devil world’s higher-ups might be concealing the truth.
• Leo understood that Sharon’s behavior came from hatred and obsession, and suspected that she had encountered the mysterious organization behind the Old Satan Faction.
• Leo told Yukino he knew the Devil world’s dangers and said he would not risk himself before gaining greater strength.
• Leo asked Yukino how she had defeated Sharon, and Yukino replied that she had treated Sharon the way Sharon had treated her.

Yukino Yukinoshita used her Ice Spirit Dongdong to secretly prepare a freezing Spell Formula and defeat Sharon, avenging her previous loss. Exhausted, Yukino found a passage out while Sharon remained frozen inside a pillar of ice.

• Yukino’s hidden magic circles immobilized Sharon and filled the Frozen Land with freezing particles that began freezing her body from within.
• Yukino revealed that Dongdong had blended into the ice and snow to draw the magic circles while Yukino fought.
• Yukino activated the circle beneath Sharon, which gathered and compressed all the freezing breath in the room before releasing it in a powerful icy column.
• The icy blast froze Sharon inside a pillar of ice and transformed the room into an ice cave.
• Yukino leaned against the wall, reassured Dongdong, and made her way toward a newly revealed passage.

Leo explained to Yukino how Devils made mutually beneficial contracts with mages, but she decided to focus on her Demonic Power and Sacred Gear for now. He checked on his exhausted peerage and learned that Yuuto Kiba and Ruruko Nimura remained comatose while they waited for the Tears of the Phoenix.

• Leo explained that Devils contracted with mages for help, research, and an exchange of knowledge, and Yukino chose to prioritize her existing strengths instead.
• Leo gave Yukino a poorly peeled apple and left her room; she ate it and fell asleep.
• Leo checked on Mahiru Shiina, soothed her as she slept, and found that the other members of his peerage were also resting.
• Leo asked Rias Gremory and Sona Shitori about Yuuto Kiba and Ruruko Nimura, who remained unconscious without improving.
• Sona told Leo that they had requested the Tears of the Phoenix from the Devil King, and Rias thanked Leo and his peerage for helping them survive the attack.

After the Old Satan Faction’s attack, Rias and Sona thanked Leo and learned why he had concealed Zenith Tempest. They warned him that his peerage’s collection of rare Sacred Gears would draw the Three Factions’ attention, but Leo remained confident he could protect himself, leaving Rias envious of Sona’s trust in him.

• Rias and Sona thanked Leo for saving them and their peerages, while Rias admitted she would have lost their match.
• Rias and Sona discussed Leo’s hidden identity as the host of Zenith Tempest, and Leo explained that he had concealed it to avoid attracting attention.
• Sona warned that Leo’s peerage held several rare Sacred Gears that would alarm Heaven and Grigori, while Rias cautioned him about the Three Factions.
• Leo refused Sona’s suggestion that he return to the Underworld, saying he could escape all but the most powerful leaders and hinting at a secret trump card.
• Rias watched Sona trust Leo and privately envied her, lamenting that good things always happened to other people.

Leo joined Rias and Sona as they prepared to receive a Satan, and learned that Rias’s older brother, Sirzechs Lucifer, was coming. Sirzechs arrived with his maid attendant and greeted Leo personally, leaving them poised to get acquainted.

• Leo checked that Akeno Himejima and Tsubaki Shinra had recovered, then asked who was arriving.
• Sona revealed that a Satan was coming in person, and Leo worried it might be Leviathan before learning it was Sirzechs Lucifer.
• Sirzechs and his silver-haired maid attendant emerged from the teleportation circle, and everyone welcomed him.
• Sirzechs greeted Leo by name, and Leo replied that he looked forward to getting to know him.

Sirzechs brought the Tears of the Phoenix to treat the injured peerage members, then heard Rias and Sona Shitori's account of the Old Satan Faction's attack. Leo pointed out that Leif Trix had used a Little Black Snake bearing the Ouroboros symbol, prompting Sirzechs to alert the Devil world's leaders and invite Leo for a walk.

• Sirzechs and Grayfia delivered the Tears of the Phoenix, and Rias and Sona Shitori sent their Queens with Grayfia to treat Yuuto Kiba and Ruruko Nimura.
• Sona Shitori and Rias gave Sirzechs a detailed report about the Old Satan Faction's attack and Leif Trix's statements.
• Sirzechs asked Leo what had stood out, and Leo described how Leif's object had empowered an Eight-Winged Devil to reach Ten-Winged Ultimate-Class strength.
• Leo revealed that Leif's bottle contained a Little Black Snake with its tail in its mouth, the Ouroboros, alarming Sirzechs, Rias, and Sona Shitori.
• Sirzechs said he would inform the Devil world's higher-ups and warned everyone to be careful before inviting Leo to accompany him for a walk.

Leo and Sirzechs investigated the Labyrinth Space, uncovering evidence that the Old Satan Faction had allies among current Devils and may have received monsters from the wielder of Annihilation Maker. Leo transferred ownership of the dimension to Sirzechs in exchange for a trustworthy replacement, then learned that Ajuka had been studying him and warned him about people watching him for their own purposes.

• Leo explained how he had become master of the Labyrinth Space and how its rooms connected to the Master Chamber.
• Sirzechs examined the Labyrinth Space and the bodies, concluding that some Old Satan Faction members were current Devils who had betrayed their side.
• Sirzechs determined that the monsters had likely been created artificially, and Leo and Sirzechs suspected the wielder of Annihilation Maker was involved.
• Leo agreed to transfer ownership of the Labyrinth Space to Sirzechs in exchange for another dimension, and he made Sirzechs its new master.
• Sirzechs told Leo that Ajuka had been studying his mutated demonic trait and Evil Pieces, and warned him to beware of people with ulterior motives.

Sirzechs warned Leo that the Church, Fallen Angels, and others were interested in his three Longinus wielders, and offered ways to protect him while he stayed in the Human World. Leo chose to accept additional protection and training, leaving Sirzechs to make arrangements and consider sending someone from his family.

• Leo reflected that Ajuka Beelzebub’s support had helped protect him from Devils seeking to take advantage of his growing influence.
• Sirzechs warned Leo that the Fallen Angel Governor General would likely take an interest in him and that the Underworld could not shield him from every threat.
• Sirzechs offered Leo the choice of returning to the Underworld or staying in the Human World with a direct way to summon help.
• Leo rejected the first option and accepted Sirzechs’s offer to send protectors and instructors while he remained in the Human World.
• Sirzechs decided to choose someone from his own family for the assignment and left with Leo.