Chapter Summaries

Li Weide prepared a safer treatment for Nagini after discovering that Slytherin had withheld the risk of splitting her soul. With Senior Sister’s help, he refined the plan and prepared to begin Nagini’s treatment.

• Li Weide confronted Slytherin for hiding the danger of soul-splitting and warned that he would no longer help Slytherin wholeheartedly unless Slytherin did the same for him.
• Mr. Riddle urged Old Tom to take charge of the family businesses, while Tom encouraged him to move beyond the past and warned that he might join Li Weide in a bloody revolution.
• Li Weide hid Slytherin in Tom’s cabin and took Nagini to Senior Sister’s underground workshop, where enslaved goblins had built a large research operation.
• Li Weide used goblins’ equipment and supplies to run experiments on chickens and rabbits for three days, then left his treatment plan for Senior Sister to review.
• Senior Sister improved the plan, and Li Weide confirmed the revisions with a successful rabbit experiment before asking Nagini whether she was ready for treatment; Nagini firmly agreed.

Li Weide removed the Transfiguration from Nagini and entered her consciousness to purify the Beast Soul and connect it to her human soul. Senior Sister appeared in her original form to help, and Nagini began to recover as Li Weide returned to the warehouse.

• Li Weide removed Nagini's Transfiguration in a sealed warehouse, and her enraged snake form attacked him before he restrained her.
• Li Weide entered Nagini's consciousness space and encountered Senior Sister, who appeared in her original form.
• Li Weide extracted the Beast Soul's negative emotions, leaving it empty and no longer conscious.
• Senior Sister created a one-way connection between the Beast Soul and Nagini's human soul, allowing the Beast Soul to nourish her.
• Senior Sister said Nagini was about to wake, and Li Weide's consciousness returned to the warehouse.

Li Weide’s treatment allowed Nagini to regain her human form and consciousness, and she celebrated the recovery with him and Tom. After discussing her future and Li Weide’s ideals, Nagini chose to join his revolutionary cause.

• Nagini transformed from a snake back into a human and tearfully thanked Li Weide.
• Li Weide brought Nagini to Tom’s cabin, where Tom was astonished to see her restored and went to prepare food.
• Nagini praised Li Weide for helping change Tom, and the two discussed her plans and his ideals.
• Nagini said she believed in Li Weide and wanted to help his cause, and Li Weide welcomed her as Comrade Nagini.
• Tom returned with food, heard Nagini had joined the cause, and declared that he had known it would happen.

After Li Weide restored Nagini to human form, he helped her discover that her snake-like resilience and powerful magic remained. Nagini demonstrated her talent with a wand, and Li Weide decided to train her into an effective fighter while he and Tom continued their cause.

• Nagini ate an enormous meal, and Li Weide explained that her body still needed nutrients as it had in snake form before giving her a bottle of Nutrient Solution.
• Nagini tested her durability by slashing her arm with a table knife, but her skin remained unmarked.
• Li Weide brought out a collection of ownerless wands, and Nagini chose a Cherry Wood wand to try her magic outside.
• Li Weide demonstrated how imagination could shape magic and explained his approach to Tom while Nagini listened.
• Nagini improvised a spell that exploded a wooden target, impressing Tom and Li Weide with her magical power.
• Nagini praised Li Weide's teaching, and he resolved to train her as a capable fighter.

On the train back to Hogwarts, Li Weide enlisted Slytherin to help develop the Basilisk’s Snake-Eye Curse and learned about Grindelwald’s planned combat assessment. After returning to the castle, Dumbledore summoned Li Weide and proposed a training regimen to help him use his immense magic and protect himself against Grindelwald.

• Li Weide showed Slytherin the completed magical trajectory diagram, provoked him into agreeing to advise on turning the Snake-Eye Curse into a castable Dark Art, and left him to organize his ideas.
• Annie told Li Weide and Tom that Grindelwald had drafted an education reform plan involving a combat assessment for first- through fourth-year students.
• Tom praised the Mutual Aid Society’s progress and asked how Li Weide had known to recruit Flitwick and Alastor Moody, and Li Weide brushed off the question as intuition.
• After the Hogwarts Express arrived, Dumbledore summoned Li Weide to his office and proposed a training regimen focused on making better use of his powerful magic.
• Dumbledore explained that Li Weide needed to build combat skills and protective options before facing Grindelwald.

Li Weide told Dumbledore that he had restored Nagini’s ability to become human and gave him a concealed account of the treatment. Back at Hogwarts, Li Weide and Slytherin discussed changes to magical education, Slytherin’s missing remains, and began examining a puppet knight’s core.

• Li Weide told Dumbledore that he had treated Nagini and that she could turn back into a human, then explained the process while concealing Nightmare Magic.
• Dumbledore sent Li Weide back to rest and hurriedly left Hogwarts through the Floo Network.
• Slytherin complained to Li Weide that simplified spells and modern schooling had made wizards neglect how magic worked.
• Li Weide asked Slytherin about his lingering obsession, and Slytherin said he wanted to recover his remains but could no longer sense them.
• Li Weide suggested studying the connection between souls and remains, and Slytherin reluctantly agreed to provide data about ghosts.
• Li Weide took out a puppet knight’s core, and he and Slytherin began examining how it worked.

Li Weide explained to Tom that his research was meant to strengthen their entire movement, not just his own magic, and demonstrated that he had recreated Slytherin’s Combat Puppets. He left Tom considering how devastating those puppets could be if armed with Muggle machine guns.

• Dumbledore delayed Li Weide’s special training because Grindelwald’s new demands kept him busy preparing things.
• Li Weide declined Tom’s invitation to the weekend club activities so he could continue researching a tiny bead and a Knight Puppet.
• Li Weide told Tom that his research and training were intended to make all their comrades powerful enough to act without him.
• Li Weide demonstrated two recreated Combat Puppets fighting at terrifying speed, and Tom recognized them from the trial in Slytherin’s Study.
• Li Weide dismissed bows and crossbows as outdated and proposed equipping the puppets with machine guns and magic-resistant runes.
• Li Weide described the struggle to develop superior weapons, spells, and potions as a Wizarding World arms race.

Li Weide tested Basilisk-hide robes on Tom and decided to raise Basilisks for their valuable materials, recruiting Tom to help despite his objections. After Slytherin explained how difficult it was to obtain a Basilisk-producing Rooster Egg, Li Weide recalled a potion that might solve the problem and left to pursue it.

• Li Weide gave Tom Basilisk-hide robes and blasted him with a Blasting Curse to test their protective enchantments.
• Li Weide decided the team should make Combat Suits from Basilisk hide and told Tom to help raise Basilisks using instructions copied from Slytherin's Study.
• Tom objected that Basilisk breeding required a Rooster Egg, and Li Weide suggested that magic could make one possible.
• Slytherin told Li Weide that a Basilisk-producing Rooster Egg had to be naturally conceived and described how he had spent nearly ten years searching for one.
• Li Weide proposed using a potion to turn a rooster into a hen temporarily, said he had a suitable potion, and left Slytherin behind.

Li Weide improved a Gender-Bending Potion formula and began Dumbledore’s combat training, only to face the peak-powered wizard in a duel. Dumbledore defeated him, leaving Li Weide to conclude that winning a duel required being underhanded.

• Li Weide modified the Gender-Bending Potion to use available ingredients and have a temporary effect, then asked Toby to gather the ingredients.
• Dumbledore left Grindelwald’s office after Grindelwald warned that Li Weide might become a threat to them both.
• Li Weide followed Dumbledore’s note to the Room of Requirement, where Dumbledore explained that his training would focus on combat experience and challenged him to duel.
• Dumbledore overwhelmed Li Weide with powerful spells and rapid Transfiguration, while Li Weide countered with evasive magic, Apparition, and a curving Disarming Charm.
• Dumbledore used hidden stone Small Dragons to trap Li Weide, appeared behind him, and declared him defeated; Li Weide said he understood that dueling meant being underhanded.

Dumbledore taught Li Weide to plan several moves ahead in duels and began training him through daily sparring. Later, Nagini arrived at the Hog's Head Inn, where Aberforth recognized her and led her to the back.

• Dumbledore explained how dueling resembled chess and advised Li Weide never to underestimate an opponent, even when he was stronger.
• Li Weide sparred with Dumbledore for nearly two hours and was told they would train together every day until he was ready.
• Li Weide returned to the dormitory exhausted, and Tom, Alphard, and Henry learned that his training involved sparring with Dumbledore.
• Nagini endured her first ride on the Knight Bus in human form and arrived at the Hog's Head Inn.
• Aberforth recognized Nagini, called Chris to watch the inn, and led her to the back.

Nagini reunited with the dying Aurelius, and Dumbledore brought Li Weide to examine him as a last hope. Li Weide discovered the Obscurus was causing severe pain and proposed weakening its magic, though he warned that the method could be dangerous for Aurelius.

• Nagini visited Aberforth and learned Aurelius was growing weaker, then went with him to see his son.
• Aurelius and Nagini reunited, shared their regrets, and Aurelius told her he had held on hoping to see her recovered.
• Dumbledore woke Li Weide and brought him to Aurelius after Nagini and Aberforth asked for help.
• Li Weide examined Aurelius with Nightmare Magic and found that the Obscurus's power was spiraling out of control.
• Li Weide said the Obscurus had to be extracted to save Aurelius, then asked if weakening its magic would make extraction possible.
• Li Weide revealed he had a way to weaken the Obscurus but could not guarantee Aurelius would survive it.

Li Weide extracted the violent negative emotions from Aurelius’s Obscurus, allowing Aurelius to regain consciousness and control of himself. Dumbledore and Aberforth then began pulling the now-unconscious Obscurus from Aurelius’s body.

• Aberforth and Dumbledore gave Li Weide permission to try his method to save Aurelius.
• Li Weide moved Aurelius outside and used Ancient Magic to draw the Obscurus’s negative emotions out of him.
• When the emotions resisted entering his Goblin Metal container, Li Weide absorbed them into his own body instead.
• After the negative emotions were removed, Aurelius woke and said he felt healed.
• Dumbledore examined Aurelius and found the Obscurus unconscious, so he and Aberforth used the Elder Wand to pull it from Aurelius.

Li Weide pretended to lose control after extracting Aurelius's Obscurus, provoking a battle with Dumbledore and Grindelwald before being subdued. Dumbledore took him back to the castle to find a way to remove the magic, while Grindelwald demanded an explanation.

• Li Weide secretly stored most of the Obscurus's Residue in Goblin Metal containers, then loosened his restraint on the negative emotions to make himself appear bloodthirsty.
• Dumbledore and the others noticed Li Weide's crimson eyes, and Dumbledore and Aberforth tried to stop him when he attacked with the Killing Curse.
• Li Weide and Dumbledore fought across the clearing, and Grindelwald joined the battle after emerging from the forest.
• Grindelwald stunned Li Weide, whose true consciousness watched as his wounded body fell unconscious.
• Dumbledore decided to take Li Weide back to the castle, and Grindelwald insisted on accompanying them so he could learn what had happened.

Dumbledore and Grindelwald worked together to extract the dangerous magic from Li Weide, while Grindelwald realized Li Weide might have engineered events that turned him into a pawn. Li Weide woke in the Hospital Wing the next morning and asked Nagini about Aurelius.

• Grindelwald confronted Dumbledore over letting Li Weide face the Obscurus and threatened to expose him, but backed down when Dumbledore hinted he could enter politics.
• Grindelwald examined Li Weide and learned that Dumbledore's sparring session had left him mentally exhausted before he treated Aurelius; Dumbledore blamed himself for Li Weide's condition.
• Grindelwald and Dumbledore used a Goblin Metal container to extract the violent magical residue from Li Weide.
• Grindelwald suspected Li Weide had orchestrated events, including guiding Annie and Grindelwald onto their current path, and wondered whether he was being manipulated.
• Li Weide woke in the Hospital Wing after Grindelwald kept him stunned overnight, and Nagini told him Aurelius had recovered and praised him as unlike Grindelwald.

Li Weide woke in the Hospital Wing after losing control of his magic, and used the incident to deepen Nagini and Dumbledore’s trust in him. He learned Dumbledore had kept the extracted Obscurus and took it for research, while privately planning to deal with Grindelwald after he realized Grindelwald had seen what he absorbed.

• Nagini told Li Weide that only one night had passed since he fainted and reassured him that no one had been hurt.
• Tom brought gifts from their classmates and revealed that Grindelwald had told him Li Weide used a Killing Curse against Dumbledore.
• Li Weide realized Grindelwald had likely identified who set the earlier trap and decided he would have to be honest with him sooner than planned.
• Dumbledore visited Li Weide, who explained that he used Ancient Magic to remove Aurelius’s negative emotions and extract the Obscurus.
• Dumbledore told Li Weide that Aurelius was recovering and out of danger, then gave him the extracted Obscurus for research.

Li Weide copied Salazar Slytherin’s unfinished Obscurus research while Slytherin learned how Helena Ravenclaw had died. After hearing her story, Slytherin asked Li Weide to find a way to make the Bloody Baron feel pain, and Li Weide hinted that he wanted Helena’s mother’s diadem in return.

• Li Weide visited the Chamber of Secrets and discussed the Obscurus with Slytherin, who described his past experiments and dictated his notes.
• Slytherin disguised himself and wandered Hogwarts, where he recognized Helena, the Grey Lady, and brought her to the Chamber of Secrets.
• Helena told Slytherin that she had stolen Rowena Ravenclaw’s diadem and fled to Albania, where Sir Baron accidentally killed her before taking his own life.
• Slytherin asked Li Weide whether he could make the Bloody Baron feel pain, and Li Weide suggested he wanted Helena’s mother’s diadem while claiming he meant to return a Hogwarts artifact.

Li Weide helped Slytherin use Obscurus to make a ghostly cane solid, while Slytherin resolved to beat Baron with it over Helena’s past. Li Weide left with the Ravenclaw Diadem’s location and a new idea for controlling Obscurus with Nightmare Magic.

• Helena agreed to let Slytherin take the Ravenclaw Diadem back to Hogwarts, and Slytherin told Li Weide he still needed him to deal with Baron.
• Helena promised to keep Slytherin’s ghostly condition secret while Slytherin chose not to ask her to help with his experiments or retrieve his bones.
• Li Weide used an altered spell and Obscurus to make Slytherin’s cane tangible, allowing Slytherin and Helena to feel it.
• Slytherin demanded that Li Weide leave the Obscurus unprocessed so he could use it like a branding iron against Baron, and Helena went to fetch Baron.
• Li Weide left before Slytherin confronted Baron and considered using Nightmare Magic to control the Obscurus as a weapon.

Li Weide trained with Dumbledore, while Nagini left Aurelius and went to the Goblin Workshop to learn from the woman he called Senior Sister. Meanwhile, Li Weide persuaded Slughorn to consider raising a Basilisk so they could make more healing potion from its blood and venom.

• Li Weide postponed retrieving Ravenclaw's Diadem until the holidays and trained with Dumbledore after learning Aurelius was recovering.
• Nagini told Aurelius she had to remain alone because of her blood curse, then left him and traveled to the Goblin Workshop.
• The woman in green offered to train Nagini so she could become strong enough to help realize Li Weide's ideals, and Nagini agreed.
• Li Weide gave Slughorn material for his Ideological and Moral Education Class and received a potion made from Basilisk blood and venom.
• Li Weide suggested using Tom's Parselmouth ability to obtain more Basilisk ingredients, and Slughorn agreed to consider the dangerous plan.

Li Weide persuaded Professor Slughorn that Basilisk breeding could be made viable by using a magical control collar and establishing farms in poor countries with willing Ministries of Magic. Slughorn agreed the plan could legalize the sourcing of Basilisk ingredients, but warned Li Weide to keep the strategy secret.

• Professor Slughorn considered the potential of Basilisk-derived potion ingredients but worried that the Ministry of Magic would never approve breeding such dangerous creatures.
• Li Weide showed Professor Slughorn an improved Goblin collar and explained that Tom’s Parselmouth ability would safeguard early experiments until the collar could control Basilisks on its own.
• Professor Slughorn recognized that experiments in Britain would be illegal without proof of control, while unapproved Basilisk potions could not be legally sold.
• Li Weide proposed breeding Basilisks in impoverished countries such as Liberia, Ethiopia, or San Marino, where their Ministries of Magic might accept the industry in exchange for revenue.
• Professor Slughorn realized that imported Basilisk ingredients from a country where breeding was legal could make their research lawful, but urged Li Weide to conceal the strategy from other wizards.

Li Weide secured Slughorn’s help in planning a Basilisk-breeding venture and explained that its profits would support their revolution. As Grindelwald advanced his reforms and moved his treasures into the Forbidden Forest, Dumbledore and Dippet faced the question of how to respond.

• Li Weide told Tom that Slughorn’s connections could help establish Basilisk breeding in suitable countries, while Tom agreed to focus on strengthening their allies.
• Li Weide spent his days in class, sparring with Dumbledore, and researching in the Chamber of Secrets, where he raised a dozen roosters to Slytherin’s fury.
• Slughorn sent people to investigate potential countries for Basilisk breeding and their Ministries of Magic, while waiting for Li Weide to solve the creatures’ reproduction problems.
• Grindelwald concluded that Dumbledore was keeping Li Weide from changing Slughorn’s Ideological and Moral Education Class until Li Weide was ready to confront him.
• Mr. Ogg told Grindelwald that his things had arrived, and Grindelwald sent a letter before leaving to see them.
• Dippet urged Dumbledore to become Minister and deal with Grindelwald, then revealed that Grindelwald had moved his treasures into the Forbidden Forest.