Chapter Summaries

Li Weide became a celebrity after Grindelwald publicly showed magical memories of him defeating the Werewolves, and Minister Fawley helped him leave the Ministry discreetly. Back at the Mobile Castle, Li Weide began preparing to establish his company, welcomed his animal companions as independent individuals, and woke to a flood of letters after the story reached the newspapers.

• Minister Fawley introduced Li Weide's achievements at a press conference, and Grindelwald projected memories showing Li Weide fighting the Werewolves and killing the Wolf King.
• Grindelwald's projection convinced the audience, and Li Weide recognized that they had each used the other to further their own plans.
• Minister Fawley escorted Li Weide away from reporters and pure-blood representatives through his private fireplace, while promising to steer coverage toward Li Weide's inventions and future company.
• Li Weide returned to the Mobile Castle, gave Tom instructions to obtain a plan for the company, and told his cat, rat, and dog companions to choose rooms and live as independent individuals.
• Li Weide saw that his system's Merit Points display remained garbled, then began weaving Unicorn Hair with his wand.
• The Daily Prophet reported Li Weide's victory over the Werewolves, and after he woke from a nap, Li Weide found himself inundated with letters while Tom joked that he was glad not to be famous.

Li Weide made Tom sort through his mountain of fan mail while Dumbledore and Professor McGonagall discussed his attack on the Werewolf camp. Annie arrived after Vinda released her, and Li Weide offered her a safe home in his castle, but Dumbledore and McGonagall could not find the castle when they reached its location.

• Li Weide persuaded Tom to sort his letters by arguing that worldly wisdom and information gathering mattered as much as combat skills.
• Professor McGonagall confronted Dumbledore about the newspaper report that Li Weide had killed the Wolf King, and Dumbledore explained that Li Weide had acted alone and risked his life.
• Tom sorted the letters for hours, then learned from Toby that Annie had arrived and that another basket of letters remained.
• Li Weide welcomed Annie and learned that Vinda had locked her up; Annie revealed that her parents had died and that Vinda was her guardian.
• Li Weide told Annie to stay in his castle for her safety, and Annie realized Vinda had sent her away to protect her from the Wizarding Supremacists.
• Dumbledore and Professor McGonagall arrived at the place where Li Weide's castle had stood, but found only an empty space.

Li Weide appointed Andrews to run a Ministry-backed company, while Dumbledore and Professor McGonagall searched unsuccessfully for Li Weide's home. Miravia killed Camilla, then fought a mysterious Vampire who escaped before Nagini, Dumbledore, and McGonagall could reach her.

• Li Weide offered Andrews the chance to lead a company supported by the British Ministry of Magic, and Andrews eagerly accepted.
• Li Weide explained to Tom that cooperation could benefit everyone and help the company succeed.
• Dumbledore failed to find Li Weide's castle, so he and Professor McGonagall decided to send a letter through Tom.
• Miravia and her group caught and killed Camilla, then prepared to return home.
• A blood-mist-wrapped attacker ambushed Miravia, fought her, and escaped without leaving magical traces as Nagini, Dumbledore, and Professor McGonagall arrived.

Miravia accidentally revealed that Li Weide’s castle could fly, bringing Dumbledore and McGonagall to his hidden home. Li Weide explained why he built the Mobile Castle, and Dumbledore concluded that it broke no laws, leaving the castle’s unusual status accepted for now.

• Miravia let slip that Li Weide’s castle had flown away, so Nagini took her, Dumbledore, and McGonagall to find him.
• Li Weide welcomed the professors to his Mobile Castle and explained that he had built it because the sky made him feel safe and he wanted to give his friends a home.
• Dumbledore and McGonagall were moved by Li Weide’s wish to offer shelter to people without homes.
• Li Weide offered to land the castle and turn himself in, but Dumbledore determined that no law prohibited a flying castle and declared it legal if it remained safe.
• Dumbledore asked Tom for a popsicle, and Li Weide told Tom to fetch him one.

After Miravia accidentally revealed the Mobile Castle to Dumbledore, Li Weide reassured her and then confronted her habit of treating serious responsibilities casually. Miravia accepted that she needed to change, while Li Weide privately resolved that she could not work with him if she repeated such mistakes.

• Dumbledore and Professor McGonagall agreed to keep the Mobile Castle secret, and Dumbledore suggested Li Weide might show it to Nicolas Flamel.
• Nagini explained that Miravia had revealed the castle after fighting an attacking Vampire, and Li Weide first asked whether Miravia had been hurt.
• When Miravia offered to leave the castle, Li Weide called the Mobile Castle their shared secret and warned her that careless mistakes could endanger the whole organization.
• Miravia apologized and promised to learn from the incident, and Li Weide told her to rest and not bring up leaving again.
• Miravia later spoke with Nagini on the balcony and admitted she had treated her mistake and their shared home carelessly.

Li Weide visited Zhang San in disguise to learn about China’s wizarding world and its Daoist traditions. Zhang San gave him a basic Daoist arts booklet, leaving Li Weide eager to explore what his Spirit Root might allow him to do.

• Zhang San comforted Zhang Qiming after he failed to enter the Ministry of Magic because of his poor foreign-language skills.
• Li Weide arrived disguised as a middle-aged visitor, revealed himself, and explained that he wanted to learn about his family’s homeland.
• Zhang San explained how China’s wizarding world divided between secluded families and sects practicing Daoist arts and loose cultivators using Western magic.
• Zhang San described how he left his family after embracing Western magic and marrying Mrs. Zhang, while Zhang Qiming retained a ritual sword as his casting tool.
• Li Weide asked to see the basics of Daoist arts, and Zhang San handed him a booklet, explaining that only people with a Spirit Root could use them.

Li Weide promised Zhang San he would help him return home, then discovered that Grindelwald was turning the debate over the Statute of Secrecy into a worldwide campaign. After experimenting with Eastern magic, Li Weide confirmed the existence of a Spirit Root, leaving Tom puzzled about what he had learned.

• Li Weide took Zhang San's booklet so he could translate it and promised Zhang San that he would be able to return home.
• Li Weide spotted Wizarding Supremacists watching Zhang San's home, confronted them, and left them disoriented.
• Grindelwald used newspapers, public debates, and prize money to spread arguments against the Statute of Secrecy, while Dumbledore failed to stop the columns.
• Vinda suggested Li Weide had prompted Dumbledore to involve the International Confederation of Wizards, and Grindelwald agreed that it was likely.
• Li Weide tested Eastern magic by summoning lightning on himself, confirmed that a Spirit Root existed within soul power, and excitedly told Tom about his discovery.

Li Weide meditated to investigate the sources of magical power and Ancient Magic, then prepared to test his theories on other people. Meanwhile, Andrews founded the new company and named it Hydra Company, and the chapter ended with Li Weide asking Miravia to lie on an experiment table before she grabbed him by the collar.

• Li Weide used meditation and Occlumency to discover a tiny opening in his soul that converted soul power into magical power, while Ancient Magic and Pure Magic Power accumulated in his brain.
• Li Weide decided to test whether the opening could be enlarged and whether Muggles could be made into wizards, using Dark Wizards and death-row inmates as potential subjects.
• Andrews finalized the company with Minister Fawley, merged the Malfoy and Shafiq companies into it, and chose the name Hydra Company.
• Tom showed Andrews the hundreds of artificial House-elves created from Toby's bloodline and soul, and Toby selected two hundred to work for the company.
• After emerging from the laboratory two days before school began, Li Weide rushed to Miravia and asked her to undress for an Ancient Magic experiment, prompting her to lift him by the collar.

Li Weide tried to persuade Miravia to undergo an examination for his research into Ancient Magic, but she refused to be examined while undressed and later suspected he planned to clone her. Tom offered a Gender Transformation Potion, and Li Weide used it on Tom instead, leaving him horrified as the potion took effect.

• Miravia grabbed Li Weide, but the figure she held turned out to be a Substitute Paper Figurine while the real Li Weide appeared behind Tom.
• Li Weide asked Miravia to help with his research and proposed examining her, but she refused to remove her clothes and eventually gave him a drop of blood.
• Miravia realized Li Weide might use her blood to make a clone, so she took back the sample and destroyed it.
• Tom revealed he had a Gender Transformation Potion that Li Weide had made, and Miravia offered to let Li Weide examine her if he drank it.
• Li Weide seized the potion from Tom and poured half the bottle down his throat, leaving Tom unable to move and terrified.

Tom and Li Weide adjusted to being transformed into girls while Li Weide examined Miravia’s ancient magic and Spirit Root. His research revealed that ancient magic could expand Spirit Roots and turn Muggles into wizards, a discovery he decided to keep secret.

• Nagini and Annie tried to get Tom to eat and change clothes, but Tom refused to wear a dress and blamed Li Weide for his transformation.
• Miravia teased Li Weide about his new appearance before helping him prepare to examine her magic.
• Li Weide found that Miravia’s ancient magic occupied a smaller but more naturally rooted area of her brain than his own, and that her Spirit Root was larger.
• Li Weide explained that his experiments showed ancient magic could expand a Spirit Root and strengthen a wizard’s magic, though he was still checking for limits and side effects.
• Li Weide revealed that he had used ancient magic to turn several Muggle death-row prisoners into wizards, but chose not to tell anyone, including Miravia.

Li Weide punished Tom, learned about Eastern methods of refining Spirit Roots, and explored combining talismans with Western magic. As the Hogwarts term began, Hydra Company opened in Godric’s Hollow and Fleamont Potter arrived to interview for a job.

• Li Weide changed back after Miravia’s potion wore off, then gave Miravia an Alchemy Camera to photograph Tom and threaten him with the pictures.
• Tom apologized and accepted a potion to change back, while Li Weide kept the photos as leverage against him.
• Li Weide visited Nicolas Flamel and Zhang San, learned how Eastern cultivators refined Spirit Roots with lightning, and gave Zhang Qiming imprinted soul power that helped him master English.
• Zhang San sent Li Weide a translated book on talismans, which Li Weide studied on the Hogwarts train while Tom remained subdued and Grace MacLaggen worried about him.
• Li Weide let Tom Cat, Spike, and Jerry choose their Hogwarts houses, and Hagrid invited them to join Gryffindor.
• In Godric’s Hollow, Andrews oversaw the new Hydra Company office as Fleamont Potter and Euphemia Potter arrived for an interview.

Fleamont and Euphemia Potter joined Hydra Company after Andrews offered them a deal that let them keep their shampoo formula and most of its profits. At Hogwarts, Li Weide learned of their arrival and watched Hagrid rescue Jerry from a mail owl, while Tom unexpectedly urged him to check on his friends.

• Andrews welcomed Fleamont and Euphemia Potter to Hydra Company and offered them research positions without requiring them to surrender their existing shampoo formula.
• The Potter Couple accepted the offer, negotiated their terms, and began work in the Technical Department.
• At Hogwarts, Li Weide learned from Andrews's report that the Potter Couple had joined and recommended that their laboratory focus on potions research.
• A mail owl mistook Jerry for food and carried him and Tom Cat into the air, but Hagrid grabbed the owl and rescued them.
• Tom urged Li Weide to check on Jerry and the others, and Li Weide said he stayed away because they were afraid of him before teasing Tom about acting strangely.

Li Weide secured permission to take his Hogwarts exams early and learned that Slytherin’s Basilisk-breeding work was ready for a handover. After telling Slytherin the history of his lost wand, Li Weide heard that Slytherin planned to travel to America and meet Tom’s Muggle father.

• Li Weide obtained a year-long Restricted Section pass from Slughorn and learned that Hogwarts would let him take his O.W.L.s early, with possible further freedom if he passed his N.E.W.T.s.
• Li Weide visited Slytherin, who reported that seven adult Basilisks had been bred and asked Li Weide to find someone to take over their care.
• Slytherin suggested Nagini as a possible caretaker, and Li Weide sent a message to Tom to ask her about it.
• Slytherin recognized Li Weide’s Elder Wand and learned that his own wand had been stolen by Isolt Sayre, buried in America, and become a Horned Serpent Wood tree.
• Li Weide recounted Isolt’s history, including how her aunt Gormlaith killed her family and how Isolt founded Ilvermorny with the Muggle James Steward.
• Slytherin decided to visit America to see the Horned Serpent Wood and investigate Isolt’s descendants, then said he would confront Tom’s Muggle father.

Li Weide organized Hydra’s letters, arranged physical training and a Hogwarts gym, then passed every OWL and N.E.W.T. exam with top marks. Dumbledore appointed him a teaching assistant so he could remain at Hogwarts and study freely, while Miravia ended the chapter bored in the Mobile Castle.

• Nagini accepted Li Weide’s request and completed the handover with Slytherin, who then left Hogwarts.
• Li Weide arranged for Hydra Company to sort his letters and ordered daily exercise for Hydra’s core members, leading Tom to propose a dedicated gym.
• Dumbledore approved a Hogwarts gym, and Li Weide sent equipment designs to Hydra Company.
• Li Weide completed his OWL and N.E.W.T. written and practical exams, earning an O in every subject.
• Dumbledore offered Li Weide a teaching assistant title, office, and laboratory so he could stay at Hogwarts, and Li Weide accepted.
• Tom and the other Hydra members met Li Weide after the exams, while Miravia complained that she was bored in the Mobile Castle.

Miravia left the Mobile Castle to travel abroad, while Li Weide settled into a research routine and strengthened his Spirit Root. Slytherin recovered a branch from his old Horned Serpent Wood wand tree, then encountered Cain, who had taken over his body and turned it into a vampire; their fight began.

• Miravia grew bored of being alone in the Mobile Castle, left Nagini instructions, and took the Vintage Car east to travel outside Britain.
• Li Weide moved into a room with a laboratory at Hogwarts, established a demanding research schedule, and spent a month improving his body and studies.
• Slytherin found Ilvermorny's Horned Serpent Wood, awakened his Snakewood Wand, and received a branch to make a wand for his descendant.
• Slytherin met Cain, who had the same face and claimed to be Slytherin himself, and accused him of stealing his body.
• Slytherin attacked Cain with the Killing Curse, but Cain dodged by transforming into red mist and revealed that he was the world's first vampire.

Slytherin fought Cain, the Vampire controlling his stolen body, and survived with help from Li Weide’s equipment and Miravia’s intervention. Miravia collected Cain’s remains to take to Li Weide, raising the possibility that he could create Slytherin a new, untainted body.

• Slytherin discovered Cain could copy his familiar magic, but gained the upper hand by using Dark Magic he had learned with Li Weide.
• Cain transformed into blood bats and attacked Slytherin with countless Killing Curses, but Li Weide’s Protective Watch shielded Slytherin when Cain ambushed him after Apparation.
• Cain enraged Slytherin and sent thorn vines at his back, but Miravia struck Cain with an Ancient Magic-enhanced Killing Curse, forcing him to flee into a sewer.
• Miravia concealed herself and Slytherin from arriving Ilvermorny professors, and Slytherin explained how Cain had stolen and corrupted his body.
• Miravia collected Cain’s blood and flesh for Li Weide, suggesting he might use it to create Slytherin a new body free of the Vampire curse.

Miravia pursued Cain after he badly injured Slytherin, while Li Weide learned what had happened and set out to help her. He left Hogwarts on Alduin, bound for the rendezvous point Miravia sent him.

• Miravia tracked Cain after Slytherin gave her his body parts and agreed she could use them as she wished.
• Li Weide examined the new Hogyoku ring he had forged, which could cast powerful spells and Eastern Daoist Arts.
• Tom told Li Weide that Cain had turned Slytherin's body into a Vampire and that Miravia had wounded Cain with the Killing Curse before pursuing him.
• Li Weide put Slytherin's remains in his laboratory freezer, then flew off on Alduin to help Miravia.
• Miravia sent Li Weide a rendezvous address and confirmed she was safe, while Dumbledore watched them depart from Hogwarts.

Cain discovered that Morbius had been killed and drained of his blood and magic by another Blood Ancestor, then vowed to hunt down the culprit. Meanwhile, Li Weide and Miravia revisited the battlefield and used Li Weide’s Daoist arts to glimpse the fleeing vampire’s red mist on the surface of water.

• Cain found Morbius’s abandoned lair and discovered his corpse, the missing Heart of Blood, and evidence of a battle from within the past three months.
• Cain suspected another Blood Ancestor had killed Morbius and other vampires, burned Morbius’s remains, and buried the cave.
• Li Weide met Miravia at a clock tower and warned her that the vampire she had fought might be the one who had ambushed Slytherin a thousand years earlier.
• Li Weide and Miravia returned to the battlefield near Ilvermorny, but Miravia’s tracking spells repeatedly failed to locate the vampire.
• Li Weide used the Eastern Yuangguang Technique with a basin of water and revealed a blurry image of the vampire fleeing as red mist.

Li Weide and Miravia tracked Cain with a modified Yuangguang Technique and Apparated to confront him. There, Miravia recognized Cain’s opponent as her old friend Sebastian Sallow, who revealed he had become a vampire while trying to cure his sister Anne.

• Li Weide used an alchemical lens to sharpen the Yuangguang Technique’s image and reasoned that he could Apparate to a place he could see.
• Miravia spotted Cain stopping in the wilderness beside a campsite, and Li Weide began preparing to teleport them there.
• Cain confronted a young man who had devoured Blood Ancestors to gain power and avenge his sister, Anne, after Morbius harmed her.
• Li Weide and Miravia Apparated beside Cain and the young man, and Miravia recognized him as Sebastian Sallow.
• Sebastian told Miravia that he had become a vampire to cure Anne.

Miravia confronted Sebastian over the innocent lives he had taken and the transformation that had changed Anne, while Cain and Li Weide prepared to fight. Li Weide and Miravia attacked Cain and Sebastian with lightning and a Killing Curse, leaving Sebastian facing Miravia’s spell.

• Miravia condemned Sebastian for killing his uncle and turning Anne into a Vampire, arguing that Anne had lost her former self.
• Cain welcomed the conflict, but Li Weide neutralized his blood-mist attack and Cain recognized him as the one who had crippled the Vampire Clan.
• Miravia said she would not leave until Sebastian was destroyed, and Li Weide offered to handle the fighting so she would not have to face her old friend alone.
• Li Weide and Miravia launched Ancient Magic lightning attacks at Cain while Li Weide struck Sebastian with Palm Lightning.
• Sebastian blocked Li Weide’s lightning with blood mist, but Miravia’s Killing Curse reached him before he could react.