Wool comes from sheep.
While Uncle Newt was riding the Hippogriff and Fire Dragon Lina, soaring under the faux sky of the Room of Requirement—
William had an absolute blast gathering wool.
Anyhow, the danger level of those magical creatures in the Magic Realm often can't be compared to the Muggle world, and for safety reasons, many places categorize all byproducts of such creatures as forbidden items based on various levels of threat.
William wasn't afraid of high prices; some things just can't be bought, no matter the price—furthermore, everyone knows gathering wool is free.
What is this? Bird Snake eggs? Take a whole nest! What's this? Swooping Evil venom? Take two bottles! What's this? Invisible Beast? Take two of them...
All in all, when Newt landed on the balcony of the Room of Requirement riding Buckbeak, he saw William leaning back on the sofa, full of satisfaction, and his pet Niffler lying spread-eagle on the sofa, its pouch looking quite bulging.
Newt suddenly felt a bad premonition...
"Whee—"
Buckbeak scratched the floor with its sharp claws, obviously displeased with Newt's distracted grooming, and with this interruption, the strange feeling in Newt's heart was quickly brushed aside...
Unnoticed by the old man, William gave Buckbeak a thumbs-up from the sofa.
"Whee!"
Buckbeak happily flapped its wings, meaning, "Don't worry, buddy, I've got this!"
Poor Uncle Newt got caught in a "capital" scheme, spending over half a day in the Room of Requirement not only helping William take care of his pets but also teaching Dobby. He even left behind many creatures he couldn't care for upon seeing the forest outside the Room of Requirement.
When Newt walked out of the Room of Requirement, he couldn't help but weigh his noticeably lighter suitcase, his face still showing bewilderment.
"Let's go, let's go, I'll take you to Hogsmeade—"
William draped an arm around the old man's shoulder, interrupting his thoughts, and led him downstairs.
"You'll take care of Jefferson, right?"
Newt, still a bit worried, turned back to look. Jefferson was his Griffin, about eighty years old this year. Newt didn't want to take it around with him due to its advanced age, nor could it return to the Greek jungle, so under William's persuasion, Jefferson stayed behind.
"Don't worry, if you don't trust me, surely you trust Dobby?"
William patted his chest, and upon hearing him mention Dobby, Newt nodded—Dobby's initiative was too strong, and according to William, he was even "employed" using Wizard Coins... It seemed any matter related to William tended not to be normal.
After sending off Uncle Newt, William sighed in relief, knowing the old man was thin-faced and unlikely to come seeking him after realizing what happened—at most, he might grumble next time they met. But by then, he would have already hatched the Bird Snake eggs, so there was nothing to fear.
Plan executed successfully!
William nodded with satisfaction, sauntering back to the Room of Requirement, where, due to the full moon, Lupin had transformed into a Werewolf and had just come out to get a drink. They greeted each other and lay together in the rocking chairs on the balcony to bask in the moonlight.
Looking at the round moon in the sky, Lupin resisted the urge to howl, lightly wagging his tail, shutting his eyes, and starting to divert his attention with other topics. The Wolf Poison Potion wasn't so effective after all, "Sirius said he wants to go out and about, being locked up for ten years, he's probably stir-crazy—"
"Fine with me, let him not stay at Hogwarts all the time; Harry and the others might get the wrong idea."
William nodded as he slurped his ice cream—this was true. Ever since having Sirius as a godfather, Harry, who had hardly felt familial love growing up, was naturally thrilled as they hung out, often. As one of the Marauders, Sirius was more familiar with this castle than even Dumbledore.
He was a bad influence on Harry, and even got Hermione to join in—how frustrating, she was his "best tool" (crossed out) "prized pupil"!
"...I really didn't expect."
"Didn't expect what?"
"Around this time last year, I was huddled in a Birmingham slum, chained up, dreading the moon outside the window..." Lupin raised a claw, the gray-black fur on the back gently swaying, covering most of the fake moon in the sky.
"Then you should thank Dumbledore; he's the one who brought you to Hogwarts," William replied nonchalantly, chomping down the leftover cone after finishing his ice cream, then snatching the ice cream Kabuda had just gotten—
Kabuda, who barely had two licks: "?"
The Niffler's eyes grew moist as it patted its belly, vowing silently that unless its master explicitly asked for it, it wouldn't hand over things stolen today!
Though, it ignored the fact William had no idea what was stashed in its pouch.
"But you changed my life—"
Lupin's tone suddenly turned serious; he straightened up and stared at William with glowing white eyes, extremely solemn.
"...I'm not into that," William said.
William sighed, he knew Lupin didn't mean it that way, but... he really couldn't handle such sentimental moments.
"..."
"I feel like cursing you."
"You're welcome."
"Damn."
...
...
Sirius really left, as he said he planned to go to France to check out the famous nude beaches. Originally, his plan was to wait until summer break and bring Harry along, but this enticing plan was nipped in the bud by Dumbledore.
"Harry must spend his summer vacation at his aunt's house—" Dumbledore's voice even sounded somewhat unfeeling.
"Now I am his guardian too!"
Sirius was clearly unwilling, he argued with waving hands, shouting with a face of displeasure.
But afterwards, Dumbledore took Sirius into a room for a conversation, and when he came out, he merely patted Harry's shoulder expressionlessly, "Don't worry, Harry, I argued with Dumbledore, he agreed, after the summer break ends, you'll spend the last half month at my place—"
"Then, I'll take you to the nude beaches to apply sunscreen on beauties—" the man's voice turned roguish.
William raised an eyebrow beside him, suddenly feeling tempted too.
Sirius reluctantly left, Ron, Harry, and Neville went to see him off, after all, a senior who was pleasant to talk to and had interesting affairs was rare, and also—Sirius was really wealthy! Everyone already knew, the Firebolt Harry received earlier was a gift from Sirius.
This made Hermione smugly raise an eyebrow, she guessed right.
Afterwards, Sirius even generously offered to gift each of them a Firebolt, but Hermione and Neville quickly refused, as neither of them usually touched brooms.
Ron actually wanted one, but couldn't bring himself to accept when others refused, so he reluctantly declined, saying he could borrow Harry's spare Nimbus 2000.
Time passed day by day, the remaining days of this semester seemed quiet and peaceful.
No Voldemort, no Dementors, no fugitives constantly lurking outside school threatening student safety, the spring sunshine brushed over the Scottish Highlands' grasslands like golden silk, tender green shoots sprouted from the cracks of steep rocks, and the weather started to heat up day by day.
Wood's wish came true—embracing the Quidditch Cup embraced by Gryffindor before graduating, during the finals, aided by the advantages of the Firebolt, the Slytherin Team's prideful Nimbus 2001 couldn't even catch Harry's trail, as Harry caught the Golden Snitch, Draco's face turned pale as if he had swallowed two flies alive.
Time continued to flow, and soon, students faced their end-of-term exams, since sixth-year had almost no assignments and few extracurriculars attended, William easily finished his paper, even helping Grindelwald grade the physics exam he assigned.
"Aren't we testing on those mutant farm flies?"
Upon hearing biology wasn't on the exam this year, William clicked his tongue regretfully, and after finishing grading, the remaining time of the semester turned into leisure time, with only tonight's Duel Club and tomorrow night's end-of-year banquet left.
Tsk, maybe I'll cook up something for those little kids—
After remaining low-key for three months, William stroked his chin, and did as he thought, so when the little wizards entered underground classroom number five, the first thing they saw was the statue standing silently in the center of the room—
The statue stood silently at four meters tall, although not as wide and imposing as Hagrid, the oppressive stone sword in its hand still made the little wizards' eyelids twitch upon entering, they simultaneously glanced at William, who was sitting aside reading.
"We... aren't supposed to..."
Fred swallowed his saliva, seemingly not quite believing his own guess, he stared silently at William until the latter nodded, finally giving form to the fear on the boy's face, he pointed at the statue unsure of what to say next.
"Rest assured, it's not about having you fight it one-on-one,"
William stood up, gently patted the statue's thigh, blue and purple lines began to spread across its body, soon, before the terrified gazes of the little wizards, the statue slowly began to move, it raised its hand to sheath the long sword behind its back, facing the little wizards unaffected.
Although its face wasn't even carved with features.
"This counts as the Duel Club's final exam, you all have to go together, in the end, I will grade your performances—"
"...Do we have other options?"
"Of course!"
"What are they?"
"Fight me, one-on-one."