"You're telling me that you saw him?" Lennon's eyes widened, the café's clattering dishes and murmuring conversations fading into the background.

"Yes," Oliver Wood replied, his gaze unwavering. "I was out for a run near the Forbidden Forest and he was just... there."

Lennon felt a chill run down her spine. "But that's impossible. He's dead."

Oliver leaned in closer, his expression a mix of shock and concern. "I know it sounds crazy, but it was him. I'd recognize him anywhere. He looked... different, though. Older, almost ethereal."

Lennon's grip tightened around her warm cup of tea, her thoughts racing. "What did he say?"

Oliver took a deep breath before speaking. "He didn't say much. Just... 'Remember me.' Then he vanished into the trees."

Lennon sat back, the chair's legs scraping against the floor. "What does it mean?"

Oliver shrugged, his brow furrowed. "I don't know. Maybe it's just a figment of my imagination, or maybe the stress of being Head Boy is getting to me."

Lennon chewed her bottom lip, the taste of mint lingering as she digested the information. "But what if it's real?"

Oliver's eyes searched hers, finding a spark of hope. "I don't know, Lennon. It could be anything. Maybe it's a sign, or a ghost, or just a trick of the light."

Lennon nodded slowly, trying to piece together what this could mean. Her brother had been missing for over a year, presumed dead by everyone else. But she had never given up hope. The memory of his smile, the way he'd ruffle her hair when she was upset, and the promise he'd made to always watch over her remained etched in her heart.

"We have to tell someone," she whispered, her voice trembling. "Professor McGonagall, maybe."

Oliver nodded, his own hand reaching for hers. "Let's do it together."

They made their way through the bustling streets of Hogsmeade, the magical shops casting a warm glow on their faces. The cool autumn air carried the scent of pumpkin spice and the distant sound of the school choir practicing for the upcoming Halloween feast. Despite the comforting ambiance, the weight of Oliver's revelation bore heavily on Lennon's shoulders. She couldn't shake the image of her brother's ghostly figure from her mind.

As they approached the imposing gates of Hogwarts, Lennon took a deep breath, steeling herself for what was to come. The grandeur of the castle never failed to make her feel small, but today, she had something more pressing to worry about than the vastness of her school. They climbed the stairs to the second floor, passing the portrait of the Fat Lady, who nodded in recognition at their school robes.

Professor McGonagall's office was located in the Gryffindor Tower. The familiar scent of dust and old books filled the corridor, and Lennon felt a pang of nostalgia for simpler times. Oliver knocked on the heavy oak door, and a sharp voice called out, "Enter."

The room was exactly as Lennon remembered it: cluttered with papers, quills, and various knick-knacks that seemed to have a life of their own. Professor McGonagall looked up from her desk, her stern expression softening slightly when she saw the two of them. "Mr. Wood, Miss Fewley," she said, her eyes narrowing. "What brings you to me with such urgent expressions?"

Oliver took the lead, recounting his strange encounter with Lennon's brother. Professor McGonagall listened intently, her face a mask of calm professionalism. She had seen many things in her years at Hogwarts, but the mention of a ghostly apparition in the Forbidden Forest was not something she took lightly.

When Oliver finished speaking, she steepled her fingers, her eyes thoughtful. "Thank you for sharing this with me," she said gravely. "I understand this is a highly sensitive matter, and I shall treat it as such."

Lennon's heart pounded in her chest as she waited for the professor's response. The silence in the room was piercing, only broken by the ticking of an ancient grandfather clock in the corner.

Professor McGonagall leaned back in her chair, stroking her chin with her index finger. "I must admit, this is most unusual," she said finally. "The Forbidden Forest is not a place to be taken lightly, especially not for a ghostly encounter."

Lennon's grip tightened around Oliver's hand. "What do we do?" she asked, her voice barely above a whisper.

"First," Professor McGonagall began, "we must rule out any mischief. Perhaps someone has conjured a specter to unsettle the students. I will look into it immediately."

Oliver nodded, his eyes never leaving hers. "Thank you, Professor."

Professor McGonagall stood up, her robes billowing around her. "Do not speak of this to anyone else until I have had a chance to investigate. I do not wish to cause unnecessary alarm."

"We understand," Lennon said, her voice a little shaky.

Oliver squeezed her hand reassuringly. "We'll keep it to ourselves."

Their steps echoed down the empty corridor as they left the office, the weight of their conversation hanging heavily in the air. Lennon's mind raced with questions and possibilities. Could it truly be her brother's ghost? Or was it some kind of trick or illusion?

As they descended the grand staircase, the portrait of the Fat Lady swiveled to face them. "Everything all right, dearies?" she asked, her round cheeks dimpling.

Lennon forced a smile. "Just a bit of a shock, that's all."

The Fat Lady nodded, her eyes twinkling with curiosity. "Well, if you need anything, you know where to find me."

The portrait swung shut behind them, and they stepped into the Great Hall, the sound of their footsteps muffled by the thick, plush carpet. The warmth from the roaring fireplace was a stark contrast to the chill that still lingered from their conversation. Lennon's stomach rumbled, reminding her that they had skipped lunch.

"Let's grab something to eat," Oliver suggested, gently guiding her towards the Gryffindor table. "You need to keep your strength up."

Lennon nodded, her thoughts swirling like the leaves outside the castle windows. They sat down together, surrounded by the low murmur of their classmates' chatter and the clinking of silverware. The smell of roast chicken and garlic mashed potatoes filled the air, but she couldn't bring herself to take a bite. Her appetite had disappeared, replaced by a mix of anxiety and anticipation.

Oliver filled a plate for her, his movements careful and deliberate. "You need to eat," he said, placing the food in front of her. "We're going to get to the bottom of this."

Lennon managed a small smile, appreciating his concern. She picked at her food, her thoughts racing faster than the Quidditch snitch she'd once watched him chase across the skies. The sight of him in his element, the wind in his hair and the fierce determination in his eyes, had always made her heart race. Now, his steadiness in the face of the impossible was equally as thrilling.

The days that followed were a blur of hushed whispers and stolen glances. Professor McGonagall had been true to her word, investigating the matter with the discretion of a seasoned Auror. The castle buzzed with the usual school gossip, but there was no mention of ghosts or unexplained apparitions. Lennon found it hard to concentrate on her studies, her mind forever drifting to the shadowy figure in the forest.

Oliver was her rock through it all, his firm belief in her brother's survival giving her the strength she needed to face each day. They spent their evenings poring over dusty tomes in the library, searching for any mention of ghosts that could help them understand what they were dealing with. The pages spoke of restless spirits, bound to the world by unfinished business or powerful emotions, but nothing quite matched the enigma of her brother's alleged reappearance.

Their bond grew stronger with every passing moment, the shared secret drawing them closer than ever before. It was during one of these late-night study sessions, the candles casting long shadows across the ancient texts, that Oliver finally broke the silence that had been stretching between them. "Lennon," he said, his voice low and gentle. "I know this is hard for you, but I'm here. No matter what happens, we'll figure it out together."

Lennon looked up at him, her eyes brimming with unshed tears. "Thank you," she murmured, her voice thick with emotion. "I don't know what I'd do without you."

Oliver reached across the table, his hand brushing against hers. "You don't have to," he said firmly. "We're in this together."

Their eyes met, and in that moment, all the tension and fear of the past week melted away. The air between them grew thick with something unspoken, something potent and undeniable. Lennon felt her heart skip a beat as Oliver leaned in, his eyes searching hers for any sign of hesitation. She found none within herself, only a deep yearning that she hadn't even realized was there until now.

As their lips touched, it was as if a spark had been lit, igniting a fire that had been smoldering for longer than either of them had realized. The world outside the library faded away, leaving only the two of them in the warm cocoon of their shared secret and burgeoning feelings.

When they finally pulled apart, Lennon's cheeks were flushed, and Oliver's eyes were filled with a softness she had never seen before. "I've liked you for a long time," he admitted, his voice barely a whisper.

Lennon felt a warmth spread through her chest. "Me too," she confessed, her voice equally hushed. The library, usually a place of quiet study, felt charged with an energy that seemed to hum just beneath the surface of their skin.

Days turned into weeks, and the mystery of her brother's ghostly visitation remained unsolved. Professor McGonagall had found no evidence of foul play or mischief in the Forbidden Forest, leaving them with more questions than answers. Yet, the closeness that had grown between Lennon and Oliver was a comfort she hadn't known she needed.