Recaps

Regulus helped stop the Grey Mist after Dumbledore secured the Plague Wand, then explored new magic and strengthened his ties with Avery, Alex, and Hermes. He returned to Grimmauld Place determined to gain the power to choose his own path and began studying Fiendfyre.

• Regulus and the Starry Sky Kite recovered the Plague Wand, and Dumbledore arrived to take it and explain its history and danger.
• Regulus studied wands, dark magic, and plants that could counter darkness, while Avery and Alex joined him in visiting the recovering Hermes.
• Regulus improved his combat movement with a chain of four Charms and discussed magic’s rational and emotional paths with Dumbledore, who explained how light could repel the Grey Mist.
• Regulus developed Spatial Warp into a repeatable spell and learned from Hermes that Daren McNeil had released the Grey Mist from a crystal beneath the Astronomy Tower.
• Regulus defeated Hermes in a formal duel, then impressed Professor McGonagall with his Transfiguration and learned that space itself could be transfigured.
• Regulus received McGonagall’s notebook of Transfiguration theories and returned to Grimmauld Place for Easter, while Hermes stayed at Hogwarts.
• Regulus told Orion about the Astronomy Tower incident and said he would gain the power to choose freely, and Orion gave him his grandfather’s pocket watch.
• Regulus read an unsigned Black family notebook about Fiendfyre, learning of its sentience, destructive power, and dangers as he studied how to use it.

Regulus trained in advanced magic, confronted a pure-blood faction at Hogwarts, and returned home for a duel with Orion and Sirius. The arc ended with Orion planning a combat task for Regulus and Sirius asking his brother how he had become so strong.

• Regulus mastered basic control of Fiendfyre, returned to Hogwarts, and began training Hermes, Avery, and Alex in the Room of Requirement.
• After the attack on the Thorne family, tensions rose at Hogwarts, and Regulus sent Avery, Alex, and Hermes to protect Samuel Vance and Lina Costa from bullying.
• Regulus confronted Arnold Belmont for demanding Slytherin support for pure-blood supremacy, bound him in the common room, and prompted the Belmont family to leave Britain.
• Regulus earned all O grades in his exams, while his retaliation against Arnold redirected Slytherin’s hostility and briefly calmed tensions at school.
• Sirius agreed to return to the Black family home for the holidays, and Orion ordered him and Regulus to spar in the hidden Training Room.
• Regulus defeated Sirius in their spar and fought Orion using powerful spells and Spatial Magic, but Orion used darkness and a trap to win their duel.
• Regulus demonstrated the Spatial Warp Charm and its combination with the Spatial Anchor Charm, and Orion promised him a combat task after a month of training.
• Regulus recommended Transfiguration as Sirius’s focus, and Sirius asked Regulus how he had done it.

Regulus contained Voldemort’s Dark Enlightenment, then studied Mandrake magic and developed the Severing Charm. In Germany, he helped Freya von Eisenhardt repel Abyssal Whisper attackers and began to suspect she had deliberately arranged the encounter, while Bellatrix’s presence in his mind grew stronger.

• Regulus resisted the Bone Box’s Dark Enlightenment through his mental safeguards, concealed his true reaction from Bellatrix, and created a Containment Chamber to study its influence safely.
• Regulus traveled to Cornwall and formed a symbiotic connection with the Mandrakes, extracting their magic and developing the Severing Charm from its decomposition power.
• Regulus showed Orion the Severing Charm’s effects and asked him to learn it, but Orion could not translate Regulus’s abstract model into spellcasting.
• Orion introduced Regulus to Freya von Eisenhardt, who brought him to Reef Town to help protect the Eisenhardt family’s maritime documents from Abyssal Whisper.
• During a patrol, Regulus and Freya fought three bone-masked attackers, and Regulus killed one with the Severing Charm while the others fled over a cliff after using mental corrosion.
• Regulus resisted the lingering mental attack, noticed Freya’s small blue flame, and chose not to question her about the secrets he suspected she was hiding.
• After dinner with Freya, Regulus concluded that his direct-hit Severing Charm could kill before a target reacted and that the mental erosion had strengthened Bellatrix’s presence in his mind.

Regulus followed Freya into an underwater ruin, resisted its offer of power, and returned to Britain with a stronger sense of his own magical path. Back at Hogwarts, he resumed his studies and repaired his strained connection with Lily while dark tensions continued to grow.

• Regulus patrolled Reef Town with Freya, discussed magic and Voldemort, and accepted that Grindelwald might be arranging opportunities for him.
• Regulus and Freya attacked an Abyssal Whisper stronghold, where Regulus unleashed Diolvo and Fiendfyre before Freya revealed the Maritime Document.
• Regulus and Freya followed the document’s coordinates into Abyssal Slumber, where a mysterious core challenged Regulus’s magic and urged him to abandon his own path.
• Regulus rejected the core’s offer, affirmed that his choices made his magic his own, and escaped with Freya as Abyssal Whisper’s leader Joachim sought to negotiate.
• Regulus told Freya he was grateful for Grindelwald’s intervention, then decided to leave the refuge and return to Britain to face his responsibilities.
• Regulus explained Grindelwald’s involvement to Orion, returned to Hogwarts, and demonstrated an unusual method of brewing a Healing Potion that impressed Slughorn.
• Lily confronted Regulus about failing to write during the holiday, apologized for neither of them, and asked him about the Dark Arts and Severus’s frightening studies.