Chapter Text
The rain hadn’t stopped falling since dawn, turning the narrow, cobbled streets of the old city district into dark, glistening veins that ran between brick buildings too old to remember their own history. Fog clung low to the ground, thick enough to swallow streetlights whole, and the air smelled of wet stone, old iron, and something sharp and metallic that even the rain couldn’t wash away.
At the far end of the alley, police tape had already been strung between two lampposts, bright yellow and stark against the gloom, fluttering uselessly in the damp wind. Officers in dark blue uniforms stood around in small groups, their expressions tight and grim, their voices low as they worked. Cameras flashed periodically, brief bursts of white light that illuminated the brickwork and the puddles, and every time one went off, the shadows seemed to stretch longer, darker, as if the building itself was leaning in to watch.
This was not a standard crime scene. Everyone here knew it.
Inside the perimeter, near the back wall of what had once been a disused warehouse, the Armed Detective Agency team was working steadily. Captain Fukuzawa Yukichi stood near the entrance, arms folded, his silver hair catching the faint light, his face as calm and unreadable as always—but his eyes were sharp, scanning every corner, every officer, every detail. At forty-five years old, he had led this precinct for nearly a decade, and he had seen enough violence to last three lifetimes. But nothing he had seen before came close to this.
Kunikida Doppo was pacing a short distance away, notebook in hand, pen hovering over the page as he spoke rapidly to a forensics officer. At twenty-two, he was one of the youngest senior detectives on the force, serious, organised, and fiercely dedicated to doing things by the book—which was exactly why he was currently radiating enough frustration to power the entire district.
His partner, of course, was making that very difficult.
Dazai Osamu was leaning casually against the furthest wall, hands tucked into the pockets of his coat, his head tilted back as if he were admiring the architecture rather than standing ten feet from a brutal murder scene. He was also twenty-two, same age as Kunikida, but that was where the similarities ended. Where Kunikida was rigid and precise, Dazai was fluid, unpredictable, and so far removed from “standard procedure” it was a miracle he still held a badge. His dark eyes were half-lidded, his lips curved into a faint, amused smile that looked entirely out of place here—and if anyone had looked closely enough, they might have noticed that his gaze didn’t wander aimlessly. It traced the room, the angles, the position of the body, the marks on the floor, and every single line and shape told him exactly what had happened here, exactly who had done it, and exactly how everything that came next was going to play out. He knew, right down to the smallest detail, that this was only the beginning. And he was looking forward to every second of it.
“Dazai!” Kunikida’s voice cut through the low hum of activity, sharp and exasperated. He marched over, notebook pressed to his chest. “Stop loitering! We have work to do. This isn’t a sightseeing trip.”
Dazai turned his head slowly, blinking as if he’d just woken up from a lovely dream. “But Kunikida-kun~,” he drawled, voice light and airy, “I am working. I’m observing. Gathering data. Appreciating the… artistic composition of the scene.” He nodded vaguely toward the centre of the room, where the body lay covered in a sheet. “It’s really quite dramatic, don’t you think? Very bold. Very… message-y.”
Kunikida’s eye twitched. “Do not call a homicide ‘artistic’ or ‘dramatic’! This is a crime investigation, not a theatre review. Now—” He gestured sharply. “—go help Yosano with the preliminary examination. Or at least stand somewhere that doesn’t look like you’re about to take a nap.”
“Ugh, fine, fine~.” Dazai pushed himself off the wall with a dramatic sigh, but his smile didn’t fade. His eyes flickered briefly toward the other figure standing near the centre of the room, and for a split second, something sharper glinted in them—recognition, understanding.
Ranpo Edogawa was standing right next to where the body had been found, surrounded by officers who were busy taking measurements and photographs. He was twenty-six, though he looked younger when he wasn’t paying attention—which was most of the time. He wore his usual usual brown coat, unbuttoned, his signature glasses perched on his nose, and in one hand, he held a large bag of lemon candy, from which he was steadily eating.
He looked completely, utterly bored.
While everyone else was tense, grim, or busy rushing around, Ranpo stood there with his hands in his coat pockets, swaying slightly on his heels, eyes half-closed, as if he were waiting for a bus that was running late rather than standing in an alley soaked in blood.
He didn’t need to walk around. He didn’t need to take measurements or look at evidence tags. He had stepped inside, taken a glance at the layout, the position of the body, the way the blood had pooled and dried, the marks scored deep into the stone floor, and he had known everything he needed to know in less than three seconds.
He also knew—without even glancing over—that Dazai had seen it too. Dazai always saw it. That was the thing about them; they were the only two people in this whole building who actually understood what they were looking at. Everyone else was just seeing a murder.
Ranpo crunched another candy loudly, then spoke, his voice clear and carrying easily over the low murmur of the team.
“It’s a message. Not just a murder.”
The officers nearest him paused, turning to look. Captain Fukuzawa stepped forward, his expression attentive. “Ranpo? What do you see?”
Ranpo gestured vaguely with the candy bag, as if the answer was obvious—which, to him, it was. “I see that you guys are all too busy following protocols and checking lists to see what’s right in front of your faces. This wasn’t about killing someone. It was about telling someone something. Or rather… telling everyone something.” He swept his gaze around the room, eyes sharp behind the lenses of his glasses. “The placement, the way the body was positioned, the marks carved into the floor, the way the entry and exit points were left completely open but untouched… it’s all arranged. It’s calculated. This wasn’t passion, or rage, or even just a robbery gone wrong. This was a statement. And whoever did it is very smart.”
He glanced sideways, catching Dazai’s eye across the room. Dazai winked. Ranpo huffed, turning back to the scene. Of course you saw it too, his look said. You always do.
Yosano Akiko stepped over from where she’d been examining the floor near the wall. At twenty-five, she was the team’s lead medical examiner and forensic specialist, sharp, beautiful, and terrifyingly efficient. She adjusted her gloves, her expression serious. “Ranpo’s right. The wounds are precise, too precise for anything impulsive. And the positioning… it’s almost ritualistic. Everything is placed exactly where it needs to be to make the biggest possible impact. Whoever did this knew exactly what they were doing, and they wanted us to know it too.”
Kunikida frowned, flipping through his notes. “But a message? Who is it for? What does it mean?”
“That,” Ranpo said, popping another candy into his mouth, “is the part we’re supposed to figure out. Or… we were supposed to. Until…” He trailed off, his ears picking up a sound that cut through the rain and the chatter outside.
Engines. Heavy, deep, powerful engines.
He wasn’t the only one to notice. Fukuzawa’s head snapped toward the entrance, his posture shifting instantly from calm to alert. Dazai stopped leaning, his posture straightening just a fraction, that amused smile growing wider. Kunikida looked up, frowning, and even Yosano paused, her gaze shifting toward the door.
The sound grew louder, closer, and then—heavy tires crunched over the cobblestones outside. Doors slammed shut, metal clanged, and then footsteps. Heavy, rhythmic, disciplined footsteps.
A collective hush fell over the entire crime scene. Officers stopped what they were doing, turning toward the entrance, their expressions shifting from grim to wary, uneasy.
Through the archway came the first of them.
They were dressed entirely in black—tactical gear, heavy coats, boots that looked built to crush stone. On their shoulders, embroidered in silver thread, was an insignia no one in the regular force recognised: a stylised angel with wings spread, but one wing was broken, the other sharp as a blade. They moved like a single unit, perfectly aligned, perfectly silent, weapons secured but visible, their faces set in cold, unreadable lines.
The Decay of Angels.
Elite Special Response Unit. Hand-picked. Highly trained. Answerable only to the highest levels of command. The shadow of the law.
They swept into the space, clearing a path, and then two men stepped through the archway at the front.
The first was tall, broad-shouldered, with wild grey hair and a scar running down the side of his face. Fukuchi Ochi, forty-five years old—same age as Fukuzawa—Commander of the Decay of Angels. He wore his black uniform like armour, every button polished, every line sharp, and his presence filled the room instantly, loud and imposing. He was a man who believed strength solved every problem, and he carried himself like someone who had never once doubted his own power.
He and Fukuzawa met in the centre of the room, standing a few feet apart, and the tension between them was thick enough to cut with a knife. They were old rivals, everyone knew that. Two men who believed in justice, but in such wildly different ways they might as well have been fighting for opposite sides.
“Fukuzawa,” Fukuchi said, his voice deep and rough, sounding almost like a growl. He looked around the room, his lip curling slightly at the sight of the evidence markers and the careful, organised way the ADA team worked. “I see you’ve got your people busy playing by the rules as always. Even when it’s obvious the rules don’t apply here.”
“Fukuchi.” Fukuzawa’s voice was calm, steady, unshaken. “We are doing our job. Following procedure ensures we find the truth, not just what we want to see. You’d do well to remember that.”
Fukuchi laughed, short and sharp. “Procedure got you nowhere fast, did it? You’ve been here for hours and you still don’t know who you’re looking for. That’s why we were called in. Because sometimes… you need more than just careful notes and good intentions.”
Behind him, the rest of the Decay of Angels unit had spread out. Nikolai Gogol—twenty-six, same age as Ranpo—leaned against a pillar, his black tactical coat thrown over his shoulders, white hair falling over one eye, grinning widely as he watched everything like it was a private performance. Sigma, twenty-four, stood near the back, tablet in hand, eyes scanning every piece of data in the room, calm and precise, his fingers moving quickly across the screen.
And then… the last one stepped inside.
Fyodor Dostoevsky.
He was twenty-eight, a few years older than Ranpo, and he looked nothing like the rest of his unit. While they wore heavy tactical gear and body armour, he wore a long, elegant black coat that fell to his ankles, soft fabric that moved like smoke when he walked, buttoned high at the throat. He had no visible weapons, no insignia, nothing to mark him as anything other than a man of refined, quiet intelligence—but every person in the room felt the weight of his presence the moment he crossed the threshold.
His hair was dark, his skin pale, and his eyes—sharp, violet, terrifyingly perceptive—swept slowly over the scene, taking in every detail in silence. He didn’t rush. He didn’t speak. He just walked forward, step by step, until he was standing near the centre, and then his gaze lifted… and locked directly onto Ranpo.
For a moment, no one moved. The rain pattered against the roof outside, soft and steady, but inside, the air felt still, heavy, charged.
Ranpo didn’t look away. He popped another candy into his mouth, chewing slowly, his expression unimpressed, unamused. He knew exactly who this was. Everyone did. The strategist, the mind behind the Decay of Angels, the man who believed that justice required purification, that sometimes you had to break everything down to build anything worth saving. To the police, he was a dangerous extremist. To the higher-ups, he was a genius. To Ranpo… he was a man who was smart enough to see the puzzle, but foolish enough to think destroying it was the solution.
Fyodor smiled. It was a small, polite, cold smile that never reached his eyes. He walked closer, ignoring everyone else in the room, until he was standing right in front of Ranpo.
“I see they sent their ‘genius’ to look at the mess,” he said, his voice soft, smooth, accented, carrying easily through the quiet room. He tilted his head slightly, eyes glinting. “Tell me, detective… do you understand what kind of monster we are hunting?”
Ranpo didn’t flinch. He crumpled the empty candy bag in one hand and tossed it casually toward an evidence bin nearby—landing it perfectly, of course—then pushed his glasses up his nose.
“I understand it better than you ever will,” he said flatly, meeting that violet gaze head-on. “Too bad you prefer breaking things to thinking about them. You’ll probably destroy half the city before you even realise what the message actually means.”
Fyodor’s smile widened just a fraction. “Or perhaps… destruction is exactly what is needed to make the message clear.”
Before Ranpo could reply, Fukuchi’s voice boomed out, cutting through the tension.
“Enough posturing! We have work to do.” He turned to Fukuzawa, crossing his arms. “You know why we’re here. Command issued the order an hour ago. This case is too big, too complex, too dangerous for any single unit to handle alone. The killer has ties to networks that go deeper than your standard investigations ever reach… and they are escalating fast. We have reports of other incidents, other threats, all leading back here.”
Fukuzawa’s expression didn’t change, but his jaw tightened slightly. He had known this was coming the moment he saw the crime scene. He just hadn’t wanted to admit it. “Joint task force. Is that what they’re ordering?”
“It is.” Fukuchi nodded, sharp and decisive. “Effective immediately, the Armed Detective Agency and the Decay of Angels are working together on this case. No arguments, no refusals, no going behind each other’s backs. We share information, we share resources, and we share the responsibility. And when this is over… we go back to staying out of each other’s way.”
A murmur rippled through both teams. Kunikida looked horrified—working alongside them? The unit that operated outside every rule and regulation in the book? Dazai, meanwhile, looked absolutely delighted, practically vibrating with excitement. Yosano raised an eyebrow, interested. Atsushi—eighteen, standing near the back with Kyoka, who was seventeen and observing only, not participating—looked nervous, glancing between the two groups.
Ranpo just sighed loudly, shoving his hands deep into his coat pockets. “Great. Just great. I finally get an interesting case, and now I have to babysit terrorists with badges.”
Fyodor chuckled softly, low and dangerous. “And I thought I was the one who enjoyed a challenge. It seems we shall both be… thoroughly entertained.”
He turned his gaze back to the crime scene, his eyes scanning the marks on the floor, the arrangement of the room, the way the shadows fell. “This is only the beginning,” he said quietly, almost to himself. “The message has been sent. Now… we must see who is capable of answering it.”
Fukuzawa looked between his own team and the Decay of Angels—at Ranpo, already bored and "arguing" with Dazai, at Kunikida scribbling furiously in his notebook, at Nikolai laughing at nothing, at Sigma already pulling up data, and at Fyodor, standing calm and composed in the centre of the chaos, like a spider in the middle of its web.
He didn’t like this. Not one bit. He didn’t trust them, didn’t trust their methods, didn’t trust their commander or their ideology. But the order had come from the very top. There was no way around it.
“Very well,” Fukuzawa said finally, his voice firm. “Joint task force. We follow the law, we follow procedure, and no one does anything reckless or dangerous without consulting both sides first.”
Fukuchi grinned, sharp and wolfish. “We’ll see how long that lasts.”
Fyodor’s eyes found Ranpo’s again across the scene, and this time, there was something else in them—curiosity, challenge, recognition. Two geniuses, two completely different worlds, forced to stand side by side.
Ranpo glared right back, already turning away to look at the clues again, already working out exactly how he was going to solve this before they could even spell the word justice.
Dazai leaned back against the wall again, watching it all unfold, his smile soft and knowing. He had known this would happen from the moment he stepped inside. He had known they would come. He had known they would have to work together.
And as he looked from Ranpo, to Fyodor, to the rest of the two teams clashing already around him, he knew one other thing for certain:
This wasn’t just a joint operation.
This was going to be the most beautiful, dangerous, chaotic thing any of them had ever been part of.
And somewhere, deep down, as the rain continued to fall outside and the shadows stretched long across the floor…
It had already begun.
End of Chapter 1