Chapter Summaries

Tonks identified the Hogwarts intruders as magic-powered Steel Golems and fought one after it ambushed her. After destroying it, she gathered Percy, Jemma, and the other young wizards to push toward the castle.

• Tonks told Percy and Jemma that Aurors had been dispatched to Hogwarts and said she had not found the missing students or Anduin.
• Tonks removed an intruder’s mask, discovered it was a Steel Golem, and was struck through her Magic Armor.
• Tonks warned the other units about the non-human attackers, then sent Percy, Jemma, and the others away from the fight.
• Tonks trapped the Steel Golem in transformed mud, dodged its attacks, and cut its chained fist off with Sectumsempra.
• Tonks crushed the Steel Golem with repeated Battering Ram strikes and ordered the others to join her in advancing toward the castle.

Tonks led the rescued students toward the Main Castle while Harry and his classmates woke up locked in the Transfiguration classroom. They began to suspect that Professor Wilson had staged the attack, but they still had no way to leave.

• Tonks explained that the Steel Golems were modified Magic Constructs, and she led Percy, Jemma, and rescued students toward the Main Castle.
• Near the Astronomy Tower, Tonks’s group met Aurors who had defeated four Constructs, and they arranged for one Auror to stay with an injured trainee while the rest joined the others.
• Harry woke in the locked Transfiguration classroom and found Hermione, Ron, Neville, Malfoy, Daphne, and the Weasley Twins among the students who had been knocked unconscious.
• Hermione said the attackers had metal bodies, and Neville recognized them as possible Alchemical Puppets.
• George suggested Professor Wilson might have staged the attack as another frightening exercise, and Ron wondered if that meant they were safe.

The students and Auror trainees learned that Anduin had staged the Hogwarts invasion as a safety drill, though they worried about their grades and criticized how dangerous it had been. Hog led the captured students to the Great Hall, where they reunited with the professors and saw the damage from the exercise.

• Harry and the other students realized the attackers had only knocked them unconscious and that Anduin’s surprise inspection was not a real attack.
• Hog arrived, announced the exercise was over, and led the students back toward the Great Hall.
• The students saw ruined corridors and met Tonks, who learned from Hog that the drill had also tested the Auror trainees.
• Harry, Hermione, and the others entered the Great Hall and found hundreds of students, battered Steel Golems, and relieved professors.
• The professors explained that they had been caught off guard, fought the golems, and eventually realized Anduin was behind the invasion.

Anduin concluded Hogwarts’ staged Death Eater invasion as an official Safety Drill and criticized the school’s poor crisis response. He identified the lack of a schoolwide alert system as a major danger and announced plans for a warning system with three severity levels.

• McGonagall and Snape confronted Hog about Anduin’s dangerous drill, and Anduin arrived to defend his actions before ordering everyone to assemble.
• Anduin announced that the invasion was Hogwarts’ first comprehensive Safety Drill, approved by Dumbledore, and reported that 189 of 853 people had been knocked down by the constructs.
• Anduin rebuked the students for failing to respond to the warning signs, and Tonks confirmed that trainee Aurors could approach Hogwarts using Jamming Interferers.
• Anduin explained that the drill exposed the absence of a schoolwide alert system and proposed Yellow, Orange, and Red Warnings for dangers of increasing severity.

Anduin reviewed Hogwarts’s Safety Drill, reprimanding students for poor judgment while praising those who protected others and explaining the value of the alarm system. He then began assessing the Ministry’s response, criticizing the trainee Aurors for taking nearly twenty minutes to reach Hogwarts.

• Anduin recalled a past Great Hall accident to show that Hogwarts faced dangers beyond outside attacks, prompting the students to reconsider the drill.
• Anduin deducted points from the Gryffindor and Slytherin First Years for failing to seek shelter, while awarding Hermione and six other students points for resisting the Dark Wizards.
• Anduin criticized George and Fred for recklessness, but awarded Jemma Farley and Percy Weasley points for organizing a defense and protecting students.
• Anduin assigned students crisis-reading and reflection homework, with additional apologies required from those he had reprimanded.
• Anduin turned to Tonks and the trainee Aurors, questioning why the Ministry team took nearly twenty minutes to respond to his alarm and reach Hogwarts.

After Hogwarts’s invasion exercise, Anduin criticized the trainee Aurors’ response and postponed the six Junior Aurors’ promotions. The school repaired the damage, and Tonks later joined Harry’s group at Anduin’s office, where she realized the exercise had also tested his improved Magic Constructs.

• Anduin reviewed the Aurors’ mistakes during the exercise and rated their performance unsatisfactory, delaying the six Junior Aurors’ promotions for six months.
• Anduin ended the exercise, assigned students to retrieve their wands and repair the castle, and McGonagall approved his plan.
• Harry’s group of four volunteered to help restore Hogwarts, and the school was repaired by evening, though Dumbledore never appeared.
• Tonks stayed behind at Hogwarts and greeted Harry’s group, Percy, and the Twins at Anduin’s office before they went to the ranch.
• Anduin scolded Tonks for smashing a Steel Golem, and she questioned him about the improved constructs.
• Tonks concluded that the invasion exercise had been a test of Anduin’s Magic Constructs.

Anduin explained how his Magic Constructs worked after the Steel Golem exercise and invited Harry and the others to help test more of them. Over dinner, Tonks shared stories of her training under Anduin, while he kept the students in the dark about their future exercises.

• Tonks teased Anduin to Harry and the others, and Anduin used a Levitating Hammer to rap her on the head.
• Anduin explained that Magic Constructs were animated creations, described how he controlled the Steel Golems, and clarified that Hog had controlled only a few during the exercise.
• Anduin scolded Fred and George for attacking Steel Golems that had not targeted them, then rapped them with the Levitating Hammer.
• Anduin offered to show the students more Constructs after dinner if they helped test them, and Percy agreed on their behalf.
• Anduin led the group through the Any Door to the ranch, where they ate together and Tonks recounted her past training with Anduin and Charlie.
• When Ron asked Tonks about Environmental Confrontation, Anduin said the students would encounter similar training later and stopped her from explaining it.

Anduin explained how the students could have used teamwork and their surroundings to improve their chances against the Dark Wizards, then brought them to test his Magic Constructs. There, they met the unusually intelligent Construct Alpha, who knew Neville and was quickly confused by Fred and George.

• Hermione asked Anduin what the students had done wrong when they faced the Dark Wizards, and he described ways they could have escaped, hindered their enemies, and worked together.
• Hermione, Harry, Ron, Neville, George, and Fred eagerly agreed they wanted more chances to fight Constructs, and Anduin led them to his Construct Room.
• Anduin introduced Alpha, a hopping Construct that could think and speak, and Alpha excitedly welcomed the visitors.
• Alpha recognized Neville, who explained that he had met Alpha before at Uncle Wilson's.
• Fred and George introduced themselves to Alpha, and George tricked it about which twin was Fred, leaving Alpha confused.

Anduin revealed his extensive collection of Magic Constructs and explained that he needed the young wizards to test how they fought and followed commands. He began the trials by assigning Neville to face an Animated Skeleton in a melee-only fight.

• Hermione defended Alpha from Fred and George, and Alpha dubbed them George One and George Two.
• Anduin had Alpha open the storeroom, revealing racks of varied Magic Constructs and a testing platform.
• Anduin explained that the constructs could adapt in combat and asked the young wizards to help test their abilities.
• Anduin chose Neville for the first trial and gave him a Vine Stick, while Alpha prepared to record the test.
• An Animated Skeleton with a bone sword, shield, and cloak leapt from a compartment to face Neville, who was told to fight it using only melee skills.

Anduin tested Neville and Hermione against coordinated Animated Skeletons, and Hermione defeated a squad of three with magic. He then introduced Animated Armor and assigned Fred to fight it.

• Neville defeated a Type I Skeleton Swordsman and observed that its combat instincts were rigid, though it was strong and fast.
• Anduin sent Neville against two skeletons, then three; Neville overcame the pair but was overwhelmed by the squad with an archer.
• Hermione used spells and Blue Bellflower Flame to defeat all three Skeleton Soldiers.
• Anduin ended the Animated Skeleton test and summoned Animated Armor, then chose Fred as its opponent.

Anduin had the young wizards test several Constructs, then discussed plans for a temporary Instance with Hog. Quirrell and Voldemort argued over the failed chance to seek the Philosopher’s Stone, and Voldemort vowed revenge on Anduin.

• Fred fought an Animated Armor but failed to overcome its defenses, while Tonks advised using water and ice to immobilize it.
• Percy defeated an Animated Skeleton with Transfiguration, and Anduin continued testing more Constructs with the students.
• Anduin and Hog discussed the Otherworld Instance Project and planned a temporary Instance for the club to try after Christmas.
• Quirrell told Voldemort that Anduin’s Safety Drill had frightened him and forced him to help repair Hogwarts.
• Voldemort angrily blamed Quirrell for failing to search for the Philosopher’s Stone during the attack and threatened to make Anduin pay.

Quirrell wrestled with Voldemort’s orders to hunt a unicorn and steal the Philosopher’s Stone, then debated whether to seek Anduin’s help. He entered Anduin’s office and asked if there was a way to shield himself from Legilimency.

• Voldemort ordered Quirrell to hunt a unicorn for its blood and obtain the Philosopher’s Stone, threatening him when he hesitated.
• Quirrell regretted his choices and considered asking Anduin for help, fearing Voldemort would discover any attempt to betray him.
• After a sleepless night, Quirrell remained distracted while teaching and decided he had three days before Voldemort woke and probed his memories.
• Quirrell unexpectedly encountered Anduin outside the Tactical Training Studies office and accepted his invitation to come inside.
• Quirrell asked Anduin whether an artifact or method could shield someone from Legilimency.

Anduin offered Quirrell several magical defenses against deep mental probing, eventually showing him an experimental device called the Mirror Brain. Quirrell recognized that it might help him deceive Voldemort, but the device’s success depended on how convincingly its wearer could fabricate a false mindscape.

• Anduin inferred from Quirrell’s questions that Quirrell was trying to protect himself from someone capable of deep Occlumency.
• Anduin showed Quirrell a Secret-Keeper’s Band, but Quirrell rejected it because it would not meet his needs.
• Anduin offered Quirrell a Thorn Ring that could counterattack mental intruders, but Quirrell refused to risk using it against his friend’s wishes.
• As Quirrell prepared to leave, Anduin presented the experimental Mirror Brain, which could hide real thoughts behind a customizable false mindscape.
• Quirrell asked whether the Mirror Brain could fool the most powerful Occlumency user, and Anduin explained that its effectiveness depended on how convincingly the wearer created the false mental world.

Quirrell left Anduin with the [Mirror Brain], agreeing to pass along his hidden friend’s feedback while worrying that Anduin had uncovered his secret. Anduin suspected Quirrell’s secret was connected to his turban and decided to prepare for the unknown threat.

• Anduin gave Quirrell the [Mirror Brain] and asked him to report how well it protected his friend from Occlumency probes.
• Quirrell left the office afraid that Anduin had noticed something, and considered whether the device could protect him from his master.
• Quirrell concluded that he might have to betray Voldemort if the [Mirror Brain] could not hide his thoughts.
• Anduin reasoned that Quirrell feared someone who could bypass the [Secret-Keeper's Band] and suspected the person was close to him.
• Anduin connected Quirrell’s strange behavior and turban to his secret, offered him one last chance to turn back, and went through the Any Door to prepare a gift for his unknown opponent.

Harry spent Christmas at Hogwarts, where Anduin gave him a locked box containing memories of Harry’s mother and himself. Anduin explained how Harry could unlock it, while Harry discovered the Mirror of Erised and saw his parents in it.

• Harry opened his Christmas presents, including an Invisibility Cloak and a locked metal box from Anduin.
• Harry wore the Invisibility Cloak to visit the abandoned classroom Anduin had named and found the Mirror of Erised, where he saw his parents.
• Anduin appeared and explained that the mirror reflected a person’s deepest desires, then warned Harry not to become too absorbed in it.
• Harry asked Anduin about the box and his parents, and Anduin said Harry’s magic was the key to its three layers.
• Anduin told Harry to raise all four attributes to ★☆ to open the first layer and promised to answer his questions once he opened the box completely.

Anduin received the Philosopher’s Stone from Dumbledore to study and discussed the possibility of meeting Nicolas Flamel. He also revealed that Quirrell might be controlled by the presence on the back of his head, leaving Dumbledore willing to spare him if he chose to change.

• After Harry left, Anduin found that the Mirror of Erised showed nothing at all, even when he removed his magical protections.
• Dumbledore offered Anduin the chance to become Hogwarts headmaster, but Anduin declined and discussed his demanding lessons for the students.
• Dumbledore gave Anduin the Philosopher’s Stone and said Nicolas Flamel was interested in meeting him.
• Anduin admitted that Quirrell had visited him and asked whether Dumbledore would spare Quirrell if he was being threatened and controlled.
• Anduin explained that the Mirror Brain seemed to have helped Quirrell resist his controller for now, and Dumbledore agreed to give Quirrell a chance while warning Anduin not to go soft if he refused it.

After returning to his manor for Christmas, Anduin examined the Philosopher's Stone and discovered that it contained extraordinarily pure, primordial magic he could absorb directly. He extracted at least three thousand units without detecting any change in the stone, leaving its capacity and source of magic unexplained.

• Anduin returned to his manor, where Hog and Shalltear played with Colorful Balls while Qiqi cleaned up, Eileen ate, and Thor watched.
• Anduin brought the Philosopher's Stone to his study and examined its appearance, structure, and response to magic.
• Anduin found that the stone absorbed magic he channeled into it and described its internal magic as inert, uniform, and solidified throughout its structure.
• Anduin drew magic from the stone and discovered it was primordial and pure enough to absorb directly without conversion or harmful side effects.
• Anduin extracted at least three thousand units of magic over several hours, but the stone's mass and detectable properties did not change.

Anduin tested the Philosopher's Stone and found that it could replenish magic at a maximum rate of thirty units per second, then discovered traces of Bloodline Magic that suggested a link to Life Alchemy. His research led him to suspect that Nicolas Flamel's Stone might have been made during the Black Death, but he found no proof that Flamel had caused the plague and set the suspicion aside for now.

• Anduin tested the Philosopher's Stone's magic output and found it could replenish thirty units of magic per second.
• Anduin's Bloodline Identification Array detected traces of Bloodline Magic in the Stone, reminding him of the Elixir of Immortality made through Life Alchemy.
• Anduin theorized that the Philosopher's Stone and the Elixir of Immortality shared an origin, and he questioned whether Nicolas Flamel had used mass death to create the Stone.
• Anduin searched historical records and found no suitable catastrophe in the Wizarding World, so he turned to Muggle history.
• Anduin compared the Rain Disaster with the Black Death and suspected that the plague's mass deaths might have supplied the Life Energy needed to create the Stone.
• Anduin could not determine whether Nicolas Flamel had caused the Black Death or merely exploited it, so he withheld judgment and returned to his work.

After returning from Christmas break, Anduin intensified Hogwarts students’ physical training, leaving them exhausted and puzzled about what he was preparing them for. Percy gathered the Tactics Club at the training grounds and said he would lead them to the unfamiliar Venue No. 4.

• Over Christmas, Anduin studied the Philosopher’s Stone, made an Elixir of Immortality he refused to drink, and continued investigating Nicolas Flamel and Lehmer Alloy.
• Anduin dismissed parents’ complaints about his training and decided to raise its intensity further.
• After the holidays, Anduin added grueling obstacle-course and endurance drills, including spell barrages for older students.
• Harry, Ron, Hermione, and Neville discussed Anduin’s sudden increase in training, while Percy revealed his progress controlling a Sense Ball and delivered Anduin’s message about an extra Tactics Club meeting.
• Percy told the assembled Tactics Club members to wait for him to lead them to Venue No. 4.

Anduin gathered twenty young wizards at a vast simulated ruined town and explained a mission to rescue hostages, including a princess, from Undead Creatures. He issued protective equipment and divided them into four squads, leaving the students to prepare for the dangerous exercise.

• Percy led the young wizards to Venue No. 4, where they found an enormous abandoned town and Anduin waiting in a command tent.
• Anduin explained that Test Instance No. 0 was a battlefield exercise in which they had to find and rescue hostages, earning extra points for saving the princess.
• Anduin provided Tactical Goggles and Transmission Vests, warning that fatal injuries would end the mission and minor injuries would let them choose whether to continue.
• Anduin assigned the twenty wizards to four Combat Squads led by Penelope, Wood, Percy, and Cedric.
• The squads began changing into their equipment, with Cedric's group already discussing plans together.