Chapter Summaries

After the foreign schools and Aurors left Hogwarts, Dumbledore and the Heads of House decided how to discipline the students involved in Gamp’s takeover. They expelled Larpo, assigned labor to students who had been coerced, and ordered Lionheart, Harry, and the Weasley siblings to leave Hogwarts under different arrangements.

• Durmstrang, Beauxbatons, Headmaster Dawn, and the international Aurors departed after the Battle of London.
• Dumbledore and the four Heads of House met to decide how Hogwarts would handle students who had fought against them or submitted to Gamp.
• The Heads agreed to expel Larpo and have the Ministry, the International Confederation of Wizards, and Muggle governments issue notices against him.
• Dumbledore considered Cedric Diggory, Keith, and other coerced students less culpable, and the Heads assigned them daily labor at Hogwarts and in Hogsmeade Village.
• Dumbledore decided Lionheart would be sent to the International Confederation of Wizards for imprisonment, Harry would go to Koldovstoretz School for rehabilitation, and the Weasley siblings would temporarily leave for Denmark.

Hogwarts publicly announced punishments for the students controlled by Gamp, sending the Weasleys to Denmark and Lionheart to the United States. Dumbledore changed Harry’s destination from South America to China, where Moriarty had arranged a grueling education for him, and Hagrid flew him away on a motorcycle.

• The four Weasley siblings left Hogwarts for Denmark, while Percy urged them to act as though their departure was a serious punishment.
• Professor McGonagall sent Lionheart to the United States under the supervision of Jericho’s cousin, Blanche III.
• Dumbledore announced that Harry would go to China instead of South America, and Moriarty admitted he had arranged the change with Madam Zhang Tianxue.
• Dumbledore warned Harry that his future depended on him, while Harry excitedly boarded Hagrid’s motorcycle without knowing about the nine years of compulsory education ahead.
• Hagrid flew Harry away as Dumbledore reflected that Harry would later face training at Mount Longhu and would not be allowed home if he failed his assessments.

Larpo created Isobella, a powerful Gorgon, and sent her to infiltrate Hogwarts as part of his revenge against Tom Riddle. Meanwhile, Light and Gamp arrived at the Vatican to pursue a deity and confront the Roman Church if necessary.

• Larpo transformed one thousand Basilisk eggs, a black snake, Muggle genetic modification, and his magic into a female Gorgon.
• Larpo named the Gorgon Isobella and ordered her to absorb a spirit in London before applying to Hogwarts as the Defense Against the Dark Arts Professor.
• Larpo began activating a seed he had secretly planted in Tom Riddle's soul.
• Light and Gamp arrived at the Vatican and warned that they would deal with anyone who interfered with their search for a deity.
• Gamp sent a calling card to the Pope and swaggered into the Vatican while Light hid in his shadow.

A Gorgon seized Tom Riddle’s body and took his memories, leaving Tom trapped while she returned to Moriarty and proposed becoming Hogwarts’ Defense Against the Dark Arts Professor. Moriarty approved the idea, and Tom hurried to meet Dumbledore, who welcomed the solution to his staffing problem.

• Tom Riddle hid in the magically protected Hog’s Head Pub until a soul-summoning force dragged him away and into a Gorgon’s body.
• The Gorgon trapped Tom in a dark space, then returned to the Hog’s Head Pub as a spirit and contacted Moriarty through Slytherin’s Locket.
• The Gorgon suggested becoming the Defense Against the Dark Arts Professor, and Moriarty told her to speak with Dumbledore and Snape.
• Tom traveled through the pub’s secret passage to Hogwarts, where Dumbledore was relieved by his arrival.

Moriarty attended the first Defense Against the Dark Arts lesson taught by Professor Tom, who planned to teach the sixth-years Nonverbal spells. Tom’s attempt to establish himself as a helpful professor faltered when Moriarty’s students revealed he had already adjusted their wands.

• Jericho helped Draco Malfoy, Dean Thomas, Seamus Finnigan, and Ron Weasley organize a Defense Against the Dark Arts professor prediction event.
• Lilith told Moriarty that she had dreamed they were both swallowed by a snake.
• Professor Tom introduced himself as the new Defense Against the Dark Arts professor and announced a month of lessons on Nonverbal spells.
• Snape entered the classroom and said Dumbledore had asked him to audit the lesson.
• Tom explained how wand wood affected Nonverbal spells, but several students said Moriarty had already fixed their wands.
• Tom looked resentfully at Moriarty, while the Gorgon sensed the sealed real Tom’s emotions stirring.

Tom impressed the Hogwarts staff and students with his Defense Against the Dark Arts lessons, while Moriarty spent the weekend shopping and celebrating with Hermione. The chapter ended with Tom watching from the classroom shadows, his serpent eyes revealed.

• Tom taught a successful first lesson, and Snape told Dumbledore that his performance was acceptable.
• Tom taught the fifth-years the Patronus Charm and the fourth-years about the Unforgivable Curses, prompting other professors to compete with his teaching.
• Tom taught Hermione's third-year class to think strategically about defending against Dark Wizards and Dark Magic.
• Moriarty took Hermione to the Three Broomsticks, where she celebrated the third anniversary of their relationship by popping champagne with him.
• Tom watched from the shadows at the back of the Defense Against the Dark Arts classroom, revealing his serpent eyes.

Gorgon secretly planted Medusa Snake Eggs in Hogwarts students’ souls and planned to turn the school into a nest of snakes within three months. After Gamp discovered an egg in Ron’s soul, he and Light prepared to exploit Larpo’s attack and enlist a god against Hogwarts.

• Gorgon used her Riddle disguise to plant Medusa Snake Eggs in students during class, estimating that they would complete their parasitism in three months.
• Ron broke down after seeing Hermione and Moriarty together, and the egg’s toxicity worsened his already fragile state.
• Gamp detected the Medusa Snake Egg in Ron’s soul and realized Larpo had begun an attack on Hogwarts.
• Gamp and Light agreed to combine their plans and schemes to destroy Hogwarts and defeat Moriarty.
• Light urged the Pope to summon a god to target Hogwarts, and the Pope said a descent was possible only if its conditions were met.

Light and Gamp deciphered the Savior God's conditions for descending and planned to bring prosperity and annihilation together by destroying Hogwarts. At Hogwarts, Moriarty and Violet arranged a secret late-night meeting, while Moriarty noticed Ron wandering toward Hagrid's Hut and a ghost passing the window.

• Light received an ancient parchment from the Pope and read its account of the World Pantheon and the conditions for the Savior God's descent with Gamp.
• Light concluded that the Savior God could descend when prosperity and annihilation coincided, and he and Gamp resolved to use every scheme they had to destroy Hogwarts.
• Violet found Moriarty in the Slytherin Common Room and asked him to spend the night with her in the Room of Requirement.
• Moriarty spotted Ron carrying alcohol toward Hagrid's Hut and said he would alert Professor McGonagall and ask Hagrid to watch over him.
• Violet asked Moriarty to punish her for wandering at night, and he noticed a ghost passing the window while she clung to him.

Moriarty realized that Ravenclaw's Wisdom might serve as a spare key to the Ravenclaw Tower Level and asked Hogwarts to help identify what it was. Dumbledore organized a schoolwide call for students to share their ideas, leaving Moriarty to collect them.

• Moriarty saw a fish repelled by the Ravenclaw Tower Level's keyhole and inferred that the tower rejected false keys through magic.
• Moriarty questioned the Bronze Door Knocker and concluded that Ravenclaw might have used wisdom to hide and reveal the tower's secret.
• Moriarty told Dumbledore that Ravenclaw's Wisdom could be a spare key and asked him to gather help figuring out what it meant.
• Dumbledore announced that students could submit their ideas about wisdom for Moriarty to collect, offering house points and a joint recommendation as rewards.

Hogwarts students pooled ideas for Ravenclaw wisdom while Moriarty and Nicolas Flamel planned a Magical AI housed in a skull. Moriarty awaited news from Zhang Tianxue that might solve the AI’s learning problem.

• Ravenclaw students filled their common room to discuss wisdom, and Penelope and Zhang Qiu proposed sharing Ravenclaw learning methods with students around the world.
• Hannah Abbott asked Hermione to help her attract Moriarty, and Hermione urged her to show her own wisdom.
• Moriarty asked Nicolas Flamel about his visit to Muggle laboratories, and Flamel predicted that combining Alchemy, technology, and Moriarty’s magic could transform civilization.
• Moriarty proposed creating a Magical AI in a skull vessel and setting it free after opening Ravenclaw Tower Level.
• Nicolas Flamel raised the challenge of teaching the AI to learn, and Moriarty said he expected good news from Zhang Tianxue of Kunlun.

Moriarty gathered magical knowledge and support from magical races to prepare for Magical AI, while Zhang Tianxue brought an Observation Mirror that could reveal parallel-world destinies. The chapter ended as Moriarty and Zhang Tianxue headed to Chinatown to use the mirror.

• Moriarty received Zhang Tianxue’s letter promising to bring an Observation Mirror to help Magical AI evolve through observations of parallel worlds.
• Moriarty planned a four-week schedule for building Magical AI and began collecting magical knowledge from books, elder wizards, and magical races.
• The Ventrue Queen agreed to share the dark races’ magical knowledge in exchange for access to Magical AI and warned Moriarty that Violet’s soul seemed slightly different.
• Moriarty left Slytherin Castle and met Zhang Tianxue at Heathrow Airport, where she revealed that the Observation Mirror was in her bag.
• Zhang Tianxue told Moriarty the mirror offered a shortcut to understanding the Multiverse, and they set off for Chinatown.

Moriarty and Zhang Tianxue used the Observation Mirror to explore several parallel Harry Potter worlds, including one where Ithiel fought Voldemort empowered by Light. They realized Light could recruit alternate versions of himself across the multiverse, leaving the Immortality Organization far more dangerous than they had thought.

• Zhang Tianxue brought Moriarty to a Zhang Family restaurant in Chinatown and showed him the Observation Mirror in its secret chamber.
• Moriarty expanded the mirror into a screen and examined parallel worlds, including one with a Thunderbird Animagus, one with a girl cooking owls, and one featuring Zhang Qiu's cousin.
• Moriarty and Zhang Tianxue observed a powerful world's Supreme Sorcerer, who had approached Kunlun after finding traces of its main mountain.
• Moriarty recognized Ithiel's Thunder Elemental Magic in another world and tried to reach her, but Zhang Tianxue reminded him that the mirror could only observe.
• Moriarty saw Ithiel fighting a time-powered Voldemort and realized Light had split off power to confront her.
• Zhang Tianxue explained that Light was conquering parallel worlds with help from alternate Lights, and Moriarty concluded the Immortality Organization might contain countless versions of Light.

Moriarty finished studying the parallel worlds and completed the Magical AI with Nicolas Flamel at Hogwarts. He used it to unlock a hidden door in the submerged Hogwarts Magic Tower, with Lilith at his side.

• Moriarty learned that he had no alternate versions in the parallel worlds, and Zhang Tianxue suggested that he might be destined to become a god.
• Moriarty and Zhang Tianxue parted ways, and he returned to Hogwarts to finish the Magical AI with Nicolas Flamel.
• Moriarty and Flamel used alchemy to complete the Magical AI, housed in a blue-glowing skull.
• Moriarty met Lilith at the Black Lake and led her underwater to the sunken Hogwarts Magic Tower.
• Moriarty placed the Magical AI in the tower's keyhole, and a door appeared.

Moriarty and Lilith discovered that Light had once been a Hogwarts student and opened the final tower level with the Sword of Gryffindor. There, they read Godric Gryffindor’s message revealing that the other Light Elemental Artifact was hidden somewhere in Hogwarts, though its location remained unknown.

• Moriarty and Lilith entered the Ravenclaw Tower Level and read the clue that Light had been a student.
• Moriarty theorized that Light belonged to the era of the Four Founders and that Gryffindor had left clues about Light’s identity.
• Lilith drew the Sword of Gryffindor from the Sorting Hat, and Moriarty sent the hat back to Dumbledore with Ravenclaw’s message.
• Lilith used the sword to open the final tower level, where she and Moriarty found Godric Gryffindor’s message instead of an artifact.
• Gryffindor’s message explained that the Four Founders had created the Magic Tower to deceive Light and that the other Light Elemental Artifact was hidden somewhere in Hogwarts.

Moriarty and Dumbledore concluded that Hogwarts itself was likely the Light Elemental Artifact, while Lilith raised doubts about its connection to time travel. They ended with new questions about why Light could not find the artifact and how Hogwarts might help defeat him.

• Moriarty and Lilith delivered Gryffindor’s message to Dumbledore, who read it closely in the Headmaster’s Office.
• Moriarty told Dumbledore that he needed the Light Elemental Artifact, but promised not to obtain it by destroying Hogwarts.
• Moriarty and Dumbledore agreed that the Light Elemental Artifact had fused with Hogwarts and that the castle itself might be the artifact.
• Moriarty recalled how Light had traveled into the past to steal the Slytherin staff and Golden Spoon and desecrate Rowena Gryffindor’s grave.
• Moriarty and Dumbledore identified Light’s former Hogwarts student status as a key clue, and Dumbledore planned to check The Book of Admittance.
• Lilith questioned whether Hogwarts could travel through time and suggested Light might have another reason for failing to find the artifact.

While Gamp and Light plotted to destroy Hogwarts, Gamp secretly used Ron Weasley to accelerate the hatching of snake eggs planted in students’ minds. The eggs hatched in Ron’s brain, leaving him injured and a little black snake emerging from his ear.

• Moriarty learned that the Magical AI had calculated more than 320 million possibilities without locating the Light Elemental Artifact.
• Larpo hid beneath a reef in the form of a Sea Serpent while waiting for Gorgon’s report that the snake eggs would hatch soon.
• Gamp and Light abandoned their plan to send the Pope to destroy Hogwarts and decided to use Ron, with Gamp planning to blame Larpo for Ron’s abnormal behavior.
• Gamp controlled Ron through the Red Dragon Bloodline and used Dark Elemental Magic and Ron’s soul to shorten the snake eggs’ hatching cycle to one week.
• Ron woke in the Gryffindor dormitory scratching his head until Draco Malfoy and his roommates restrained him, and a little black snake crawled out of Ron’s ear.

Ron was taken over by Basilisks hatched from eggs inside his skull, and Professor Tom secretly stopped him before he could harm Dean Thomas and Seamus. The next morning, Moriarty visited the three boys in the Hospital Wing, where Ron trembled at his presence.

• Ten little Basilisks crawled out of Ron's ear, while the ones remaining inside his skull took control of him.
• Ron seized Dean Thomas and Seamus and carried them out of the dormitory, smashing through the Fat Lady's portrait on his way out.
• Professor Tom knocked Ron unconscious and brought the three boys to the Hospital Wing, then told Dumbledore and Professor McGonagall that Ron had seemed controlled.
• Tom suggested that Ulick Gamp might have controlled Ron, and Dumbledore told McGonagall to protect the Gryffindor students.
• The next morning, Dumbledore told Moriarty what had happened, and Ron began trembling when Moriarty sat beside his bed.

Moriarty discovered that Ron’s strange behavior was connected to a parasitic presence, while the Dragon Horn Earring’s bloodline suppression protected Moriarty from Ron’s attack. The Egyptian Princess used her Time Eye to investigate and collapsed after seeing a vision of snakes, leaving Moriarty convinced he understood the incident.

• Moriarty provoked Ron with a story about an alternate world where Ron married Hermione, and Ron sprang up to attack him.
• The Dragon Horn Earring released Dragon Might that knocked Ron down, and Moriarty realized the Weasley family had Red Dragon Bloodline subject to Ithiel’s Bloodline Suppression.
• The Egyptian Princess arrived at Hogwarts after foreseeing that Ron would cause a disaster and used divine power to examine him.
• The Egyptian Princess warned that Ron had been parasitized and activated her Time Eye to investigate.
• The Egyptian Princess saw a vision of a hundred Basilisks, a thousand-year snake demon, and a massive snake tide, then screamed that everyone was a snake and collapsed.

Moriarty exposed the Gorgon hiding in Tom Riddle’s soul and helped capture her, but she revealed that Basilisk eggs had infected people throughout Hogwarts. The Gorgon accelerated time to hatch the eggs, and Moriarty countered with a Snakewood tree’s emerald light as the crisis escalated.

• Moriarty told Professor Dumbledore that a Basilisk was consuming Ron’s brain and identified the expelled Larpo as the culprit, then revealed that the Gorgon was hiding in Tom’s soul.
• The Gorgon transformed and fled the Headmaster’s Office, but Lilith, Zhang Tianxue, and Diana intercepted and restrained her in the corridor.
• Lilith’s golden pythons began turning to stone, while Moriarty and the others felt pain in their heads and Dumbledore collapsed in a fit.
• The Gorgon freed herself and revealed that Basilisk eggs had infected Hogwarts, using her Eyes of Time-Lag to accelerate their maturation.
• Moriarty invoked the power of a Snakewood tree, expanding its emerald light to cover the entire Castle.

Moriarty used the Snakewood Wand to heal Hogwarts and free Astoria and Daphne from the Greengrass Bloodline Curse, then extracted the Gorgon’s Eyes of Time-Lag and used Magical AI to locate Larpo in the English Channel. He and his three companions set out to kill Larpo before Gamp realized what had happened and returned to help him.

• Moriarty used the Snakewood Wand’s Healing Ray to cure Hogwarts teachers and students, lift Astoria and Daphne’s Bloodline Curse, and heal Dumbledore and the Flamel couple.
• Ron woke in the Hospital Wing with his headache gone, then fainted when he saw the Egyptian Princess, who tucked them both beneath the blankets.
• Moriarty restrained the Gorgon and used Water Elemental Magic to squeeze the Eyes of Time-Lag from her eye sockets.
• Magical AI read the Gorgon’s mind and projected an image of Larpo hiding among reefs in the English Channel.
• Moriarty warned that Gamp might notice the change in Ron’s Red Dragon Bloodline and return to help Larpo, so he and his three companions left to eliminate Larpo quickly.