After Narcissa learned that Nova intended to personally train Harry and Hermione, she made a bold request:
Could Draco be included in the training as well?
Nova accepted—on one condition that was to create an open business alliance between the Malfoy, Potter, and Black families
With that secured, Draco was added to the Vault.
At first, the atmosphere inside the Sanctum Vault was thick with tension.
Harry, Hermione, and Draco barely tolerated each other. Understandable. After all, Lucius Malfoy had sent werewolves to murder Harry and Hermione—an act that could never be forgotten.
On the other hand, Draco viewed the duo through the lens of pure-blood supremacy: Harry, a half-blood; Hermione, a so-called "mudblood."
The hostility ran deep.
But under Nova's strict and impartial tutelage, along with new buisness alliance between their families, that animosity began to erode. It didn't disappear—but it dulled. Respect replaced hatred. They were still not friends. But they were no longer enemies either.
Each of them had signed a contract: Nova would train them to become competent—no, exceptional—witches and wizards.
After discussions with their respective guardians, the curriculum was finalized.
The focus was simple: Charms, Transfiguration, Defense Against the Dark Arts (DADA) and Potions. All taught to the N.E.W.T.s level.
At first, the teens assumed they'd be spending the next four years in training. Time dilation inside the Vault would allow that, of course—but then Nova unveiled something that shattered their expectations.
The G.M.D (Grey Matter's Diadem), the item that would be flagship product of the Trader's Shop.
G.M.D. was built with three primary functions:
1. Enhance Mental Strength
2. Accelerate Memory Retention
3. Increase Comprehension Speed
Then using his Technomancy spell, Nova allowed the diadem to link directly to his high-spec laptop, leveraging its processing power to further optimize neural efficiency.
In practical terms?
The original G.M.D., as rated by his System, increased mental power by 50%.
Not fifty points but fifty percent.
That kind of boost wasn't just impressive. It was insane.
To put it into perspective, Nova's base mental power sat solidly in the mid-Third Rank, according to his System's classification. But under the influence of the G.M.D., his effective cognitive output was pushed to the threshold of the Second Rank—a monumental leap, especially considering how difficult mental advancement becomes at higher levels.
In practical terms: if Cerebro could allow Charles Xavier to project his mind across the entire Earth, then using the G.M.D., Xavier's mental field could theoretically span the entire solar system.
The combination of mental amplification, cognitive compression, and data processing linkage turned the G.M.D. into one of the most valuable training tools.
But that kind of enhancement didn't come for free.
After all, operating the G.M.D. at full capacity consumed an enormous amount of energy. Even Nova, with his superior energy reserves and high strength, would find himself exhausted within minutes—and that's not even accounting for the immense mental strain the device imposed when running at maximum potential.
To solve this, Nova devised a tiered system for the G.M.D.'s operational power, allowing adjustable scaling based on the user's tolerance and energy capacity.
The base enhancement began at 2%, a modest increase in comprehension speed and memory retention. From there, it incrementally scaled upward—3%, 4%, 5%, and so on—capping at 20%, which was the maximum enhancement the device could provide natively, without external assistance.
Originally, the remaining 30% boost in Nova's prototype came from linking the G.M.D. to his personal technomancy-enhanced laptop, which borrowed the computational power of the device to further amplify the user's cognitive throughput. But Nova had no intention of offering that proprietary interface to the public version.
Thus, for the commercial model to be released through the Trader's Shop, the 20% cap became the hard limit. Each enhancement tier would cost Trader Credits (TC), scaled by time used and percentage of amplification selected.
Nova could already envision it to be most high-demanded product—not just for students or mages, but for researchers, inventors and tacticians across realms who relied on sheer mental sharpness to survive or grow stronger.
----
Returning to his students, Nova granted each of them free access to a 5% mental power enhancement via the G.M.D., but only after he first constructed mental archives within their minds. This alone was an extremely generous gesture—perhaps influenced by the particularly enjoyable night he'd spent with three beautiful MILFs.
Originally, Nova had intended to make Harry, Hermione, and Draco construct the mental archives themselves. It would've served as valuable training in mental discipline, control, and inner architecture. But after assessing the time cost and their inexperience in such intricate mental work, he chose efficiency over principle.
Using a custom spell developed through his power over reality, he built three highly efficient mental archive chambers—each personalized to the student's temperament and memory processing pattern.
Once the archives were in place, Nova began transferring vast amounts of magical theory directly into their minds, subject by subject, structured and categorized. The G.M.D.'s enhanced comprehension speed allowed them to digest and retain this information with ease. Theory was followed by guided self-practice, combining Nova's lectures with automated illusion simulations.
To his satisfaction, all three teens progressed rapidly, thanks to their innate magical talent and determination. Within two years—compressed through altered time ratios inside the Sanctum Vault—they had completed the entire N.E.W.T.-level curriculum of Charms, Transfiguration, Defense Against the Dark Arts, and Potions.
Their guardians were astounded.
Lily, Narcissa, and even Emma—though less directly involved—were all deeply impressed. For magical teens to master such advanced knowledge in record time was virtually unheard of.
As a reward for their achievement, Nova gave each student the opportunity to choose a specialization—a field of study beyond traditional Hogwarts subjects.
The options were broad:
Advanced Muggle sciences (quantum theory, genetics, material physics)
Esoteric Hogwarts branches (ancient runes, magical law, arithmancy)
Rare disciplines like Magi-Tech (fusion of magic and technology)
Or Artifactology, focusing on forging, enchantment theory, and magical item crafting.
After careful deliberation and discussions with their respective guardians, the trio made their choices.
Harry Potter and Hermione Granger both selected Magi-Tech, fascinated by the limitless potential of combining magical systems with advanced tech.
Draco Malfoy, surprisingly, chose Artifacts, attracted by legacy, prestige, and the raw craftsmanship involved in magical forging.
At that point, they could've exited the trunk and returned to their lives with honors. But none of them did.
Instead, they chose to stay—voluntarily—continuing their pursuit of mastery in their chosen fields. No longer reliant on Nova's direct instruction, they shifted to autonomous learning, working with material unlocked from the Trunk Library—tailored and tiered for each of their chosen paths.
In fact, before the third year even ended, the trio collaborated on their first joint project:
A magical audiovisual transmission system—essentially a cross between a wizarding television, projector, and communication mirror.
It allowed for long-distance, real-time image and voice transmission, secured with anti-eavesdropping wards.
Their success shocked their guardians and earned Nova's silent nod of approval. It wasn't just pride—he saw genuine potential in their innovation.
In fact, this was one of the key reasons Nova decided to officially add the G.M.D. to the Trader's Shop catalog.
He had realized something vital:
If intelligent, ambitious teens could create something of this caliber using only a 5% boost and foundational theory… what would happen if talented individuals across the multiverse had access to the same tool?
The G.M.D. wasn't just a learning enhancer—it was a multiversal investment engine.
Customers could use the G.M.D. to accelerate their learning, experiment with rare magics, and potentially create unique systems or inventions that Nova could then acquire, refine, and sell to other worlds or factions in need of those innovations.
A loop of innovation, trade, and profit.
And the audiovisual transmission system built by Harry, Hermione, and Draco?
That was the first real success.
A functional fusion of magical theory and technological structure, it allowed long-range image and voice transmission, powered by stabilized mana cores and protected by layered wards. Think magical radio and video calls—secure, fast, and scalable.
In essence, they'd created the blueprint for a magical Internet.
Nova immediately saw potential applications in worlds like Black Clover, where long-distance communication was primitive. With this, they could enable secure battlefield coordination, instant messaging, even cross-kingdom commerce.
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