The Kingdom of Beelzenia is founded and begins industrialization.
The Demon of Envy performs the body swap technique on Kagura Octo and steals her identity, while trapping the real Kagura in the scissors. "Kagura" then runs away from home with the Twin Blades of Levianta and elopes with the tailor Nagare Sudou.
Ma detects the Demon of Envy's presence in Jakoku.
Kayo Sudou is born to Kagura and Nagare Sudou.
Gakuga goes out to retrieve an item from the trading house and sees Kai Miroku attempting arson outside. Gakuga attempts to stop him, but when the fire eventually grows into an uncontrollable blaze he instead goes to save his family at home. As Gakuga evacuates Kayo and Ren a building collapses onto Kayo and Ren, trapping the two and leading to Kayo's scarring and Ren's death. Gakuga subcsonciously transforms into his winged form and chases Kai up Mount Inasa, but eventually collapses due to his exhaustion and injuries.
The monk Giyara finds the amnesiac Gakuga on Mount Inasa while still in his winged form. When he responds to Giyara in Jakokuese the monk treats his wounds. The next day he manages to change back into his human form and Giyara stays with the man until his burns heal and names him Gakusha. Gakusha decides to begin studying mantras to see if it will help them recover his memories.
Kayo is left in the custody of the Octo family while she recovers from her wounds and is tended to by Bufuko.
Once all of Gakusha's wounds are healed with the exception of a few scars on his hands and face, he leaves with Giyara to meet with Gato Octo at the Izami magistrate. Noticing that Gakusha's self conscious about the scars on his face, Giyara buys Gakusha a fukaamigasa hat.
Giyara tells Gato about strange people on Mount Inasa he and Gakusha saw. Giyara tells Gakusha that he plans to continue his travels across Jakoku, and Gakusha decides to accompany him.
Circa EC 839
Kiji Yarera arrives in Onigashima to work at the Yarera-Zusco Trading house. He then meets Miku Miroku and bonds with her over their shared hair color.
Before EC 842
Kokutan-douji meets with Rahab in her mermaid form by a cliff, and she tells him to go meet his true mother in Enbizaka.
After leaving the village with his friend Inukichi, Kokutan-douji encounters Saruteito XVI. Saruteito, searching for Saruteito I's lost blades, join the two of them on their journey to Onigashima.
The three end up being involved in various encounters during their travels, such as fighting bandits and punishing a corrupt magistrate.
Having recovered from her phyiscal injuries, Kayo is evicted from the Octo household since she is unaware of where the blades her mother stole are. Bufuko requests Kayo make her a maid uniform and she returns to her tailor shop, where she briefly meets with Miku.
Ma arrives in Enbizaka as a Levin missionary with the Freezis Foundation and Perrier Cutie Marlon.
A few weeks after her eviction, Kayo delivers the maid uniform to Bufuko and meets Perrier and Ma. Ma offers to swap bodies with Kayo, and the two agree to meet up in three days.
Two days after her visit to with Bufuko, Kayo briefly visits the Miroku shop and meets Rin.
Three days after their meeting, Ma arrives at the tailor shop and uses the body swap technique on Kayo. Ma then magically alters everyone's memories to avoid confusion. Later that day, Kayo sees Kai at the Soukyou Bridge and becomes convinced that Gakuga is alive upon seeing the burn marks on his hand.
Ma begins bedrest to recuperate from performing the body swap ritual.
Kayo visits Oyuka's hairpin shop to deliver the repaired kimono.
Kayo has a prophetic "purple dream" and is visited by Oyuka.
Kayo brings a delivery to the soba shop and sees Kai with Mei at the Souyoku Bridge, causing her to freeze up and leave. After telling Kai that she needs to visit the trading house, Mei goes to the trading house and while Kai returns to the Miroku shop. That night, Mei is confronted by Kayo near the soba shop while returning home. Kayo uses the individual blades of the scissors to murder Mei and then steals her damaged kimono.
Oyuka visits to the tailor shop and tells Kayo about Mei's murder as Kayo repairs Mei's kimono.
A few months after Mei's murder, Kiji returns to Elphegort for a one month trip.
Kai argues with Miku by the Soukyou Bridge over the child she concieved with Kiji. That night Miku is confronted by Kayo while returning home from the Freezis Foundation. Kayo murders Miku and steals her damaged obi.
Oyuka visits the tailor shop and tells Kayo about the latest murder as Kayo repairs Miku's obi. Constable Uibee Aoi visits Kai and confirms that the corpse is Miku. Uibee interrogates Perrier about the incident, and Anan supports her alibi.
Kiji returns to Enbizaka. While visiting the Miroku shop Uibee suggests that Kai go buy something for Rin and asks him about the argument he had with Miku. Kiji then confronts Kai about Miku's murder and blames him for it. Uibee asks Kiji for information, but Kiji refuses and says he'll solve the case and kill Miku's murderer himself.
Kokutan-douji, Saruteito, and Inukichi arrive in Enbizaka. Kayo visits Oyuka's hairpin shop and overhears a Eikichi and Oyuka's conversation about Kokutan-douji and his companions. When Kayo returns home she finds Kokutan-douji waiting there, who tells her that a mermaid told him to find his "true mother". Kayo accepts him as Ren and he begins living with Kayo and helping her with the shop.
Inukichi begins residing at and working for the Freezis trading house and develops a crush on Bufuko.
Oyuka meets Kayo at her shop and points out that Kokutan-douji can't be Ren due to the age difference. Kokutan-douji meets Inukichi at a tea shop, and the two discuss the recent slashings in Enbizaka and Kokutan-douji's amibition to punish evildoers. Saruteito examines an abandoned seaside cave and talks with Kiji about the slasher case.
Rin goes to live with her father's family in Amayomi. While there, she discovers one of the Four Mirrors of Lucifenia.
Inukichi begins searching for the mermaid for the Freezis Foundation.
Giyara and Gakusha, now a full-fledged monk, visit Momogengou and Giyara falls ill.
Giyara dies and his soul begins wandering hell. Gakusha performs the funeral rites for Giyara before deciding to return to Izami to try and recall his forgotten memories.
At least one month after her departure, Rin returns from Amayomi. Inukichi visits Kayo's shop and gifts Kayo and Kokutan-douji brioche. Kokutan-douji voices his doubts on whether he was supposed to meet Kayo, but thinks he was supposed to come to Onigashima. Inukichi suggests meeting with Ma. Kayo visits Oyuka's shop and sees Kai and Rin shopping there together. Rin plans to return to Amayomi next week and Kai plans to go with her in the spring, and Kayo leaves the shop. Kokutan-douji meets with Ma, who tells him that the mermaid lied to him to distract him from his true mission. That night, Kayo leaves the shop to attack Rin and meets with her at the beach. Rin and Kayo discuss reincarnation and the vessels of sin, with Rin declaring that she is a rincarnation of Riliane Lucifen d'Autriche. Rin attempts to summon the Demon of Pride but fails, and Kayo murders her. Rin apologizes to Allen in her dying breaths, and Kayo steals Rin's hairpin. Kayo returns home, and Rin's corpse is washed away by the sea.
Rin is declared missing and guards begin protecting the Miroku shop.
Kayo disappears from Enbizaka the next day and takes the scissors with her to an abandoned temple on Mount Inasa. Saruteito visits the Freezis trading house and talks with Anan about the connection between the Octo and Lang families and the twin blades, and offers the sword Teigankikujuumoji in exchange for the blades if they are recovered. Inukichi meets up with Saruteito and tells her that Bufuko agreed to a date. Inukichi and Saruteito meet with Kokutan-douji at the tailor shop. Saruteito informs Kokutan-douji that the Yarera-Zusco firm has begun hunting down Kayo and that Saruteito plans to chase after them. Saruteito returns the sword Kyousen to Kokutan-douji and the three head towards Mount Inasa. Kai travels up the mountain and stops at the temple, where he is greeted by Kayo. Kai realizes that Kayo is wearing Mei's kimono, Miku's obi, and Rin's hairpin. Kayo confesses that she killed the three of them and tells Kai about a dream she's been having lately. She tells him that in the dream Kai tells Kayo something that causes Enbizaka to fall into chaos, and then brutally murders him. Kokutan-douji and his companions are surrounded by the Yarera-Zusco firm before they agree to let the three accompany them to meet Kayo. Saruteito then notices that Kayo's coming down the mountain towards them and she attempts to walk right past the group. Kiji and Kokutan-douji argue over who gets to confront her, and the magistrate officers arrive and arrest Kayo.
Kai's corpse is discovered at the temple the day after Kayo's arrest.
Bufuko notices Grim the End in some luggage at the Freezis firm and pockets it.
One month after her arrest, Kayo is tried by Magistrate Gato Octo. Kayo states that she murdered her husband and his lovers because he was unfaithful, even though Gato tries to reason with her that Kai is not her husband. Gato charges her guilty of murdering the Miroku family out of her own willful delusion and is sentenced to execution in three days. Kiji tells Kokutan-douji after the trial that Kai was a member of the Crimson Robed Masses and theorizes that Kayo somehow learned that he started the fire four years ago. He suspects that she feigned madness because vengeance is forbidden in Jakoku, and to protect Enbizaka from inevitable conflict. Kiji also tells Kokutan-douji that he plans to return to Elphegort in two weeks.
Three days after her trial, Kokutan-douji and Inukichi attend Kayo's execution at the execution grounds. Despite multiple attempts to behead her, Kayo doesn't die and the skin of her neck appeared to become fish scales as it healed itself. The executioner flees, and her execution is postponed to four days later.
Saruteito and Kokutan-douji meet up at the tea shop where she theorizes that Kayo might have eaten mermaid flesh and gained immortality. Bufuko visits the two and takes Kokutan-douji back to the tailor shop to talk in private. Bufuko gives Kokutan-douji Kayo's scissors and he chooses to leave them inside the shop. Bufuko blames the mermaid for Kokutan-douji's amnesia and stabs Grim the End in key form into Kokutan-douji's forehead. Kokutan-douji's memories as Allen return and he identifies Bufuko as Behemo. Kokutan-douji accuses Behemo of interfering with Kayo but he denies it. Behemo tells Kokutan-douji that Kayo was destined to carry out her crimes while under the delusion that Kai was Gakuga, but after performing the body swap ritual with Ma she had a prophetic dream and changed her future. Behemo offers to take him back to the heavenly yard now that Rin is dead, but Kokutan-douji declines because he wants to help Kayo. Behemo gives him Grim the End and tells Kokutan-douji that the key should transform into a sword and be able to kill her. Behemo explains that Kayo was considered a "contractor" since birth because her mother was a demon, and that only contractors can kill other contractors.
Kokutan-douji visits the magistrate office and offers to use his sword to kill Kayo and they quickly accept out of necessity.
Four days after the prior attempt, Kayo is blindfolded on the execution block but identifies Kokutan-douji as Ren despite this. She asks him to call her mother one last time, and Kokutan-douji does so while beheading her with Grim the End in katana form. Grim the End then goes haywire and flies off somewhere. Kayo's decapitated head is put on display at the execution grounds.
Gakusha arrives at Mount Inasa and attempts to visit the temple, but sees suspicious people there and decides against it. He then arrives in Enbizaka and sees Kayo's head at the execution grounds. He then starts reciting a sutra for her and asks a woman offering flowers who the head is, and she tells him a bit about Kayo. Gakusha then spends the night at an inn in Enbizaka.
49 days after Giyara's death, Gakusha returns to the execution site to recite more sutras and meets Kokutan-douji there. Kokutan-douji tells Gakusha that he was the one who beheaded Kayo, and the two recite sutras together. Giyara meets the Master of the Hellish Yard and she apologizes to him, saying that he was supposed to be sent to heaven. She instructs him to head up but offers him a gift in compensation. Giyara requests that Gakusha have his memories returned, and she notes that he's a descendant of Venomania and has shapeshifting powers. She restores Gakusha's memories and Giyara heads up to heaven. Gumillia and Seth notice that Allen is currently in the living world along with Ma and Behemo, and they realize that Behemo was responsible for Allen's reincarntion into Kokutan-douji. While performing the sutras Gakusha suddenly crouches and declares that he remembers everything. He tells Kokutan-douji that he's Gakuga Sudou and tells him about his past in Enbizaka. He then asks to go see Kayo, but Kokutan-douji identifies her as the head on display. Gakuga says her face didn't look like that and chastises Kokutan-douji for the joke before heading into town to meet Kayo at the tailor shop. Ma visits Kayo's tailor shop and finds the Twin Blades of Levianta in their scissor form and begins talking with Kagura Octo about the events of the previous year. She then takes the scissors with her to meet Rahab out in the ocean. After briefly discussing the body swap Rahab performed Ma performs the body swap technique and seals the demon back inside the scissors, leaving Kagura as a soul without a body. Behemo arrives and, ignoring Ma, invites Kagura's soul to come with Kokutan-douji and him to the Heavenly Yard. Kagura flies away with him towards Onigashima, and Ma returns to Enbizaka to prepare to set sail. Kagura and Behemo meet up with Kokutan-douji at the execution site.
Perrier Cutie Marlon establishes trade with Jakoku but the country's borders and ports remain closed. Anan Octo joins Perrier on her return trip to Maistia as he wants to recover his family's heirloom sword and travel to other countries. Eikichi and Oyuka discuss how Kayo's head is due to be removed once the days get warmer and Oyuka requests that she be given a proper burial. Inukichi plans to return to Momogengou, and Saruteito plans to return home as well. They recount how Kokutan-douji told them that he was going to visit a foreign country with Bufuko, and Saruteito declares that if she can't find Saruteito I's swords she'll just have to create even better blades. That night, Behemo, Kokutan-douji, and Kagura fly up towards the Heavenly Yard.
Circa EC 852
Perrier Cutie Marlon arrives in Jakoku with the Maistian Navy and demands Jakoku open its borders for full trade.
The Crimson Robed Masses fight against the opening of Jakoku, but the organization is destroyed by the Maistian forces.
The Eto Shogunate dissolves, and Jakoku opens its borders.
The Union State of Evillious (USE) is formed by Marlon, Levianta, Elphegort, and Lucifenia via the Aishikeru Treaty.