The request to find and track the coven of vampires came at just the right time, especially for Rosie, who still found amusement in their earlier body-swapping misadventure. While the others had been less thrilled, she seemed to always find the fun in things. Now, however, the stakes were higher—literally. Uraraka had picked the mission from the adventurer's board: a high-priority request to eliminate a coven of vampires that had been abducting travelers along the King's Road.

The King's Road, once known for being a bustling trade route, had become a place of fear. Adventurers, merchants, nobles and commoners alike had vanished, with rumors circulating that many were either turned into vampires, used as blood thralls, or worse—already dead. Those who had managed to return, gaunt and traumatized, spoke of the vampires' speed, their thirst for blood, and their cruelty. The mission was urgent.

Riding their horses through the woodlands surrounding the King's Road, the group remained vigilant. Rosie, seated on her mare, let the reins fall slack as she reached into her saddlebag, pulling out her flute. The gentle notes of her melody floated through the air. The melody seemed to blend with the cool breeze.

"We will have to be very careful," Momo said, breaking the gentle rhythm of the moment. Her voice was serious, as always, when giving information she had learned from her vast studies. "Vampires are fast, and once they sink their fangs into you, their venom poisons the bloodstream. It makes you stop fighting, and in some cases, the victims even grow addicted to the sensation of having their blood drained. That's how they keep thralls—addicted to the bite."

Uraraka gasped, her eyes wide. "Momo, how do you know so much about vampires?"

Momo nodded, her expression thoughtful. "I encountered a vampire once when I was very young. She had fallen asleep outside, and the sun was rising. I found her and carried her into a cave so she wouldn't burn. For saving her, she gave me a gift. Later, I helped her feed by bringing her a stag. She thanked me by teaching me how to protect myself from her kind. When night fell, she returned to her coven."

Izuku, ever the diligent learner, immediately started scribbling notes in his journal, mumbling excitedly under his breath about the new information. He wrote down everything Momo said, his mind already racing with ideas.

Katsuki groaned from his horse, glaring at Izuku. "Shut it, nerd. You're irritating me with all that mumbling."

Rosie giggled softly at the exchange, before raising her flute once more. As Momo continued explaining what she knew about vampires, Rosie played a gentle tune, letting the melody dance in the wind. But there was one crucial piece of knowledge Rosie had that Momo hadn't mentioned—whether because she didn't know, or simply didn't find it important. Vampires, Rosie knew, were especially drawn to music. Certain notes, played in the right sequence, could lull a vampire into a charmed sleep. How long the sleep lasted depended on the strength of the vampire, but it was a valuable trick she kept tucked away in her mind. For now, though, she kept the information to herself, filing it away for when it might be needed.

They continued their journey leisurely, keeping a sharp eye out for any signs of the vampires' presence. Katsuki rode beside Rosie, his eyes always scanning the trees, while Shoto and Izuku took the lead. Behind them, Uraraka and Momo chatted quietly on their horses. They knew that vampires often lived in remote, dark places—castles, manors, or underground crypts and catacombs. With so many ruins and hidden estates along the King's Road, the task of locating the coven wouldn't be easy.

As night began to fall, Katsuki's sharp hearing picked up something—faint noises, like whispers carried on the wind. He scowled, motioning for the group to stop. "I hear something," he muttered, his tone low.

Uraraka, with her affinity for animals, had also sensed something. She closed her eyes for a moment, letting her powers expand, connecting with the nearby creatures. After a moment, her eyes snapped open. "There's a disturbance up ahead. Animals are avoiding the area—it's like they can sense the danger."

Katsuki nodded, confirming her suspicion. "We're close. Too close. We need to set up camp far enough away that we don't draw attention."

With this information in hand, they decided to stop and make camp at a safe distance. The vampires' lair was near, and they'd need to scout it out before making any moves. Shoto, Izuku, and Uraraka volunteered to scout ahead, leaving Rosie, Momo, and Katsuki behind to investigate another potential lead.

"Be careful," Momo said as she and Rosie dismounted their horses. "Katsuki, Rosie, let's see if we can find where they're hiding. We might be able to spot their lair from a vantage point."

Katsuki, still on edge from the sounds he'd heard earlier, nodded and led the way, his hand hovering near the hilt of his weapon. The three of them moved cautiously through the darkened forest, Katsuki in the lead with Momo behind him, carefully scanning their surroundings. Rosie, unbothered by the tension, kept pace easily, her eyes sharp.

They hadn't gone far when they reached an overgrown path that led to a rocky outcrop. From there, they could see down into a valley below, where a cluster of ancient, crumbling buildings stood, hidden among the trees.

"Bingo," Katsuki muttered, narrowing his eyes. "Looks like we found their nest."

The buildings below were in ruin, but even from this distance, they could see signs of recent activity—flickering lights, moving shadows, and the unmistakable presence of figures standing guard. The vampires had made their home in the remains of an old manor, half-buried beneath the earth, the entrance cleverly hidden by overgrowth and shadows.

"This must be it," Momo said quietly. "We should report back to the others."

Before they could turn back, Rosie raised a hand. "Wait… look."

She pointed to a large, ornate archway built into the side of one of the ruins. Strange symbols were carved into the stone, barely visible in the fading light. "That looks like it could be important," Rosie noted. "Maybe it leads underground?"

Katsuki squinted at the archway. "Only one way to find out. But we'll need backup."

With the location of the vampires' lair now known, the trio hurried back to camp to regroup with Shoto, Izuku, and Uraraka. They'd found the vampires' home.

As the trio of Katsuki, Momo, and Rosie returned to the camp, they found Shoto, Uraraka, and Izuku already waiting for them around a small fire. The tension in the air was palpable—despite their earlier scouting mission, they all knew the vampires were close. Uraraka looked up first, relief crossing her face as the others arrived.

"Did you find them?" she asked.

Katsuki nodded sharply, his usual scowl deepening. "Yeah. They're holed up in some ruined manor, just off the King's Road. Momo spotted some ancient symbols, probably leading to their main nest underground."

"Good," Shoto added. "If we attack while it's daylight, we'll have the advantage. Most of them should be asleep."

Izuku flipped open his journal, quickly jotting down notes as they discussed strategy. "We need to incapacitate the vampires while they're weak and drag any stragglers into the sunlight. The less we have to fight at full strength, the better."

The plan was simple: a daylight assault. The vampires, weakened by the lack of darkness, would be sitting ducks for their coordinated attack. But as they discussed the details, an unsettling sound interrupted their conversation—the rustle of leaves, far too synchronized to be the wind.

Katsuki was the first to react, his sharp instincts kicking in. "We've got company," he growled.

From the shadows of the forest surrounding their camp, vampires began to descend upon them. Dozens at first, their pale faces twisted in hunger and rage, followed by more—a horde of at least a hundred, all moving with supernatural speed. Their eyes gleamed with malevolent intent as they closed in.

"They're attacking us now?!" Uraraka yelped, eyes wide.

"No time to talk!" Katsuki barked. "Move!"

In a split second, the group sprang into action. Katsuki's hands crackled with explosive energy as he launched himself into the air, blasting back several vampires with a powerful detonation. "Die!" he roared, his explosions lighting up the darkening sky.

Shoto immediately followed suit, unleashing a stream of fire and ice in perfect tandem. His right side blasted icy barricades to slow the vampires down, while his left conjured fiery waves that scorched any who dared approach. The balance between his fire and ice kept the vampires at bay, but there were so many that they kept coming in waves.

Uraraka and Izuku fought beside each other. Uraraka used her snare spell to trap several of them while Izuku used his enhanced strength to deliver precise blows, kicking their heads off. Momo quickly created silver stakes with her hands, handing them out as the battle intensified.

Ways to kill a vampire were decapitation, silver stake to the heart or sunlight.

Amid the chaos, Rosie fought near Katsuki, her sword slicing through the vampires that came at her with deadly precision. She danced through the battlefield with natural grace and acrobatic prowess, staying close to him, always aware of his movements. The two fought side by side, an unspoken bond guiding their teamwork.

Suddenly, out of the corner of her eye, Rosie saw a flash of light—a vampire, more imposing than the others, stood at the edge of the fray. He was strikingly handsome, his dark hair slicked back and his eyes glowing a deep crimson. This was no ordinary vampire; his presence commanded authority, and the aura around him was different. This was the leader of the coven.

The vampire leader raised his hand, murmuring an incantation. Magic swirled in the air, dark and potent. With a flick of his wrist, he sent an enchanted collar flying toward Katsuki, the chain glinting as it cut through the air, aiming for his neck.

Rosie's instincts kicked in. Without thinking, she shoved Katsuki out of the way. "Katsuki!" she yelled.

The collar struck her instead, wrapping tightly around her neck. The moment it snapped shut, a bright light flashed, and Rosie let out a gasp, stumbling backward. Katsuki, who had been blasted off balance by her push, turned just in time to see Rosie fall.

"Rosie!" His voice cracked with panic as he sprinted toward her, catching her in his arms just before she hit the ground. The light from the collar dimmed, but it was still locked around her neck, glowing faintly.

Katsuki's hands shook, both from adrenaline and disbelief. "You idiot," he muttered, his voice strained as he looked down at her. "Why'd you do that? I could've dodged it."

Rosie, despite the pain from the enchanted collar, smiled weakly. "Because you're my partner," she whispered. "You'd do the same for me."

Before Katsuki could respond, the vampire leader's cold, mocking voice filled the air. "Well, well. I was aiming for the Dragon," he said, eyes gleaming with satisfaction. "But capturing an elf as my personal slave? Much better."

Katsuki's eyes widened, his expression twisting with rage. "You bastard," he growled, his hands starting to spark with explosive power.

The vampire leader merely chuckled. "I'll let you and your friends go. Consider it a kindness, after all the lives you've taken from my coven tonight…" he gestured to the countless scorched bodies and headless bodies that littered the clearing, the silver stakes gleaming in the moonlight. "But as for her…"

He snapped his fingers, and the chain attached to Rosie's collar jerked violently. Rosie cried out as she was forced to walk towards him, the collar glowing red as the chain yanked her toward him, dragging her away from the arms of Katsuki.

"No!" Katsuki roared, reaching out for her, but the vampire was too fast. In a puff of dark smoke, the vampire disappeared, taking Rosie with him.

"Katsuki!" Rosie's voice echoed through the air as she was pulled into the darkness, her final cry cut off as the smoke engulfed her.

For a moment, the world seemed to freeze. Katsuki stood there, his arms still outstretched, his mind struggling to process what had just happened. Then, the rage hit.

Katsuki's scream of fury shattered the silence. "DAMN IT ALL TO HELL!" His hands exploded with power, the force of his Quirk raging out of control. The ground beneath him cracked as explosion after explosion erupted from his palms. "I'll kill him! I'll kill every last one of them!"

His friends stood back, watching helplessly as Katsuki's anger spiraled. The air around him was thick with smoke and heat as his explosions grew wilder, lighting up the battlefield. But in his mind, only one thing mattered: getting Rosie back.

And nothing—no vampire, no army—was going to stop him from doing just that.