Chapter 6: The Blood Oath
The air in the hidden alcove was thick with the scent of old violence—polished silver, oiled leather, and the faint, iron-tinged memory of blood soaked into stone. The flickering candlelight danced over Adrian’s sharp features as he moved, a shadow against deeper shadows. In one fluid motion, he closed the distance, his hand snapping out to bracket Mercedes’s throat, his grip not crushing, but inescapable. He drove her back against the cold armory wall with a soft thud of fabric and flesh.
Her gray-green eyes widened, not with fear, but with a fiery defiance that made his amber ones gleam. He leaned in, his platinum hair falling like a curtain around them. The tips of his fangs, sharp and deadly, grazed the frantic pulse hammering beneath her golden skin.
“Swear on your nahual blood,” he hissed, the words a venomous whisper against her ear. “Your brothers will storm the east wing when I give the signal.”
Her breath hitched. The defiance in her glare wavered, melting into a complex, reluctant trust. She could feel the lethal promise in him, the coiled tension that had nothing to do with this moment and everything to do with the monstrous order festering in his pocket. Kael, leaning against a rack of rusted pikes a few feet away, let a low growl rumble in his chest. The flickering light caught the subtle ripple of golden fur bristling just beneath the surface of his skin, a wolf restrained by sheer will.
Adrian’s gaze never left Mercedes’s. He dipped his head, dragging the flat of his tongue up the column of her throat, tasting salt and the wild, electric hum of her hidden power. “Do this,” he murmured, the vibration against her skin intimate and threatening, “and I’ll show you what a prince really tastes like when he’s not holding back.”
Mercedes swallowed, her throat moving against his lips. “I swear,” she said, her voice steadier than she felt. “But you don’t need to try to seduce me.”
Adrian laughed, a dry, brittle sound that held no humor. He pulled back just enough to meet her eyes, his sardonic smirk a ghost of its usual self. “Oh, but, sweet little nahual,” he whispered, his thumb stroking the frantic beat in her neck. “I want to.”
The distant thud was felt more than heard—a deep, concussive whump that shuddered through the stone floor and dislodged a fine mist of dust from the ceiling. The candle flames guttered violently.
Silence, thick and immediate, swallowed the alcove.
A slow, fierce smile spread across Mercedes’s face, igniting her features. “I guess they arrived early.”
Adrian’s own smile was a sharp, bright thing, a weapon drawn. The weight of the king’s command, the phantom feel of Vorghan’s grip in his hair, the sour taste of his own transactional degradation—it all coalesced into a single, clear point of action. He released her throat, his hand dropping to his side. “Then, we should meet them,” he said, his tone shifting into a deadly civility. “We don’t want to be rude.”
He turned, his movements swift and precise, and grabbed a long, wrapped bundle leaning against the wall. He tossed it to Mercedes. She caught it, her fingers deftly untying the leather cord. The wrappings fell away to reveal her personal shotgun, its dark metal etched with protective nahual sigils that glinted softly in the low light. The weight of it in her hands was a comfort, an extension of her own will.
Kael pushed off from the wall, his form seeming to expand, filling the narrow space. The playful growl was gone, replaced by a alpha’s focused silence. “Noise discipline is out the window,” he said, his blue-green eyes scanning the curtain that separated them from the main armory. “They’ll know we’re coming.”
“Let them know,” Adrian said, pulling a pair of silvered daggers from a nearby rack. He tested their balance with a casual flick of his wrists. “Let them be afraid.”
He led the way, sweeping the tattered velvet curtain aside. The main armory was chaos. The blast had come from the eastern gates; the sound of clashing steel and guttural shouts echoed down the corridor, mixing with the frantic alarms now blaring a high, piercing whine. Several guards were running past the armory entrance, buckling on armor as they went, their faces masks of confusion.
Adrian didn’t hesitate. He moved into the hallway, a streak of black silk and platinum hair. A guard skidded to a halt, fumbling for his sword. Adrian was a blur. One dagger plunged upward under the guard’s chin, the other slashed across the throat of the man behind him. It was silent, efficient, and brutally fast. Two bodies slumped to the floor without a cry.
“East wing,” Adrian said, not looking back as he wiped his blades on a fallen guard’s cloak. “Stay close. The rotations are fake, but my father’s personal sentinels are not. They’ll be with Cassian.”
They ran. The corridors of the Court of Ash became a dizzying maze of panic and violence. The Rivera assault was a precise spearhead, not a scattered riot. They encountered pockets of fierce fighting—Mercedes’s brothers, recognizable by their similar builds and the same fierce grace in combat, were leading teams of nahual allies and werewolf pack-members from Kael’s clan. They fought in shifting, coordinated formations, a mix of gunfire, claw, and tooth against vampire speed and steel.
Mercedes fired her shotgun, the roar deafening in the enclosed space. The spread of iron shot and enchanted salt carved a swath through a charging sentinel, giving Kael the opening to leap, his form blurring into a massive, golden-furred wolf mid-air. He landed on another vampire, jaws closing around its armored shoulder with a crunch of metal and bone.
Adrian was a storm front. He didn’t fight; he unmade. His daggers were extensions of his fury, a cathartic release for the humiliation in Vorghan’s office, for the king’s poisoned honor. He moved through guards and sentinels alike, a dancer in a grisly ballet, each movement ending a life. His father’s words echoed with every kill: “Executor.” “Decapitate him.” “Your place.”
They reached the great arched entrance to the east wing. The massive double doors, carved from ancient ebony, were shattered inward. Inside, the antechamber was a charnel house. Fallen guards littered the floor, but more concerning were the four figures standing motionless in the center, facing the inner door that led to Cassian’s private chambers.
The King’s Personal Sentinels.
They wore no standard armor, only tailored suits of grey, ash-veined leather. Their faces were pale, impassive masks, and their eyes were solid black orbs. Each held a long, needle-thin estoc sword, pointed at the floor. The air around them crackled with static.
“Shit,” Kael muttered, reforming into his human shape, blood streaking his bare chest. “I’ve only ever heard of these things.”
“Cassian is behind that door,” Adrian said, his voice flat. The data-slate’s promise was useless here. Vorghan’s biometric override wouldn’t get them past this.
One of the sentinels tilted its head, its black eyes fixing on Adrian. A voice like grinding stones emanated from it. “Executor. Your commission is not for another forty-three hours. You are early. And you have brought… company.”
Adrian didn’t bother with a reply. He threw the dagger in his right hand. It flew straight and true, aimed for the sentinel’s throat.
The creature didn’t move to block it. The dagger stopped in mid-air, an inch from the grey leather, as if hitting an invisible wall. It vibrated, then fell to the floor with a clatter.
“Okay,” Mercedes breathed, leveling her shotgun. “New plan.”
The sentinel that had spoken lifted its estoc. The other three moved in perfect, silent unison, fanning out. They didn’t charge. They flowed, their speed making even Adrian’s movements seem sluggish.
The fight was unlike any other. Kael lunged, only to be repelled by an unseen force that slammed him into the wall. Mercedes fired, but the salt-shot spread and dissipated harmlessly against the same barrier. Adrian engaged the lead sentinel, his remaining dagger a silver blur. He was faster than any vampire in the court, but the sentinel matched him parry for parry, its estoc moving with preternatural, economy, each strike aiming for a vital point with chilling precision.
Adrian realized the truth as he fought. These weren’t just guards. They were extensions of the king’s will, embodying his cold, precise cruelty. They were meant not just to protect Cassian, but to test Adrian. To see if his new ‘Executor’ was worthy of the title.
A estoc tip grazed his ribs, slicing through silk and skin. He hissed, darting back. Out of the corner of his eye, he saw Kael grappling with another, his werewolf strength barely containing the thing’s arm as its free hand reached for his eyes.
They were losing.
Mercedes screamed—not in pain, but in frustration and gathering power. She dropped her shotgun, her hands coming together. The floral tattoos on her arms seemed to writhe, glowing with an inner, emerald light. The air hummed, thickened. She wasn’t trying to break their defense; she was enchanting the very space around them.
“Adrian! The floor!” she yelled, her voice strained.
He understood. He feinted left, then dropped, sweeping a leg at the sentinel’s knees. As expected, the invisible barrier protected it. But the ancient flagstone beneath its feet, enchanted by Mercedes’s sudden, desperate magic, did not.
The stone liquefied into a foot of clinging, quick-set cement.
The sentinel’s impassive face showed no surprise, but its footing was compromised for a single, crucial second. Its perfect balance faltered.
Adrian was already moving upward, his body uncoiling like a spring. He didn’t use his dagger. He slammed his palm, fingers splayed, against the center of the sentinel’s chest. He focused not on breaking bone, but on releasing the torrent of violent, hungry energy that was his birthright—the dark gift he’d spent centuries learning to control and direct.
A shockwave of pure force, silent and devastating, erupted from his touch. It bypassed the external barrier, traveling through the sentinel’s own body. The creature didn’t fly back. It stiffened, its black eyes flashing with a sudden, shocking glimpse of crimson light. Then it simply crumbled, collapsing inward on itself as if every bone had been turned to sand. It hit the hardened stone at its feet with a dry, rattling sound.
The other sentinels froze. The one facing Kael hesitated for a fraction of a second.
It was all Kael needed. He roared, his jaws finding purchase on the creature’s shoulder where the barrier flickered. He ripped, and this time, the leather and the flesh beneath tore.
The remaining two sentinels reassessed. They stepped back, lowering their estocs. The grinding voice echoed from all of them at once. “The commission… will be witnessed.”
Then they turned and melted into the shadows of the corridor, moving with the same silent, impossible speed.
The antechamber fell silent except for the heavy breathing of the three of them. The inner door to Cassian’s chambers stood unguarded.
Adrian looked at his hand, then at the pile of ash-leather and dust that had been a sentinel. He had never unleashed that specific kind of power before. It left a cold, hollow feeling in its wake.
Mercedes staggered, catching herself on the wall. The light from her tattoos faded. “What… what was that?”
“Later,” Adrian rasped, wiping blood from his cut. He strode to the inner door, the one meant for the king’s new assassin. He placed his hand on the carved ebony. It swung open silently, smoothly.
Cassian’s chambers were dark, lit only by a single low-burning hearth. The legitimate prince stood facing the doorway, his back to them, looking out a tall, slender window at the chaos in the courtyards below. He was dressed in simple, dark clothing, a travelling cloak over his shoulders. A single packed bag sat at his feet.
He turned. His face was pale, resigned, but his eyes were clear and calm. They landed on Adrian, covered in blood and panting, flanked by a nahual and a werewolf.
“Brother,” Cassian said, his voice quiet. “You’re early.” He glanced at the bag. “But then, so was I.”
The packed bag at Cassian’s feet made Adrian’s breath catch. It wasn’t the scene he’d expected—no last stand, no fearful cowering. Just a resigned preparation for flight. The scent of beeswax and old books hung in the room, a stark contrast to the metallic blood and chaos clinging to Adrian’s skin.
He stepped further inside, his boots silent on the thick rug. The hollow chill from disintegrating the Sentinel still vibrated in his bones. “What are you doing?” Adrian asked, his voice rough.
Cassian’s gaze was weary, but clear. He didn’t look at Mercedes or Kael lingering in the shattered doorway. His focus remained on his brother. “I know about your mission. Your duty to decapitate me.” He let out a slow, deliberate breath. “I didn’t want you to carry that weight, too. But I suppose it’s too late now.”
A sharp, cold pain lanced through Adrian’s chest, more debilitating than any wound. His father’s cruel test had been a poison, and Cassian had swallowed it first. “You really think I would do something like that?” The words were tight, strained. “For him?”
Cassian offered a small, sad smile. “One of us must survive our father.” He gestured weakly to the window, where the reflected glow of distant fires danced. “I am glad it is you. Otherwise, why are you here, and what is all this commotion for?”
The raw faith in that statement nearly broke Adrian’s composure. He shook his head, a fierce, defiant gesture. “It’s a coup, brother.” He stepped closer, the gulf between them shortening with his conviction. “We are going to put you on the throne. We must go to the Council and place you where you belong.”
Cassian’s resolve wavered, his eyes flicking to the bag as if ashamed of it. “For me to sit on the throne,” he said softly, “our father must be dead.”
A grin, sharp and alive, finally cut through Adrian’s anguish. He nodded his head towards Mercedes and Kael in the doorway. “I already have a plan for that to happen.”
Another explosion rocked the wing, closer this time. Dust sifted from the ceiling joists. Mercedes flinched, turning her ear to the sound. “That must be my brothers destroying the main armory,” she said, urgency cutting through the heavy moment. “We need to move.”
Cassian looked from Adrian’s determined face to the waiting allies, then down at his own packed bag—a symbol of intended surrender. He kicked it aside, the motion final. He gave a single, decisive nod.
“Then let’s not keep them waiting.” He walked toward them, falling into step beside Adrian as they moved back into the ravaged antechamber. “Tell me this plan of yours on the way.”
Adrian didn't waste breath. They moved, a tight unit flowing back into the shattered antechamber, past the sentinel's remains. The acrid stink of his own discharged power lingered in his sinuses. "The plan's simple," Adrian said, his voice cutting through the distant sounds of combat echoing down the hall. "We leverage the chaos your family’s assault is causing. We get you in front of the Council of Elders before my father can lock the throne room down."
He pushed open a hidden servant's door, gesturing them into a narrower, darker passage. "The Council convenes in the Hall of Ancestors. They're old, traditional. If they see you standing there, alive and defiant, while his guards are losing control of his court..."
"...They might just reject his rule outright," Cassian finished, understanding brightening his tired eyes. The logic was sound. The king's power rested on an image of absolute control. This rebellion shattered that.
"Exactly." Adrian glanced back at Mercedes as they jogged. "Your brothers are the key. The ones my father couldn't kill."
Cassian looked at her with new appreciation, his gaze taking in her determined set, the fading glow of her tattoos. "A nahual family," he murmured, almost to himself. "I thought your line was extinct."
"Almost," Mercedes said, her voice tight with focus. She checked her shotgun, ejecting a spent shell and loading a fresh one with practiced ease. "He hunted us for decades. We just got better at hiding."
"And enchanting weapons," Adrian added, leading them around a corner where the sounds of fighting grew louder. "And using spiritual magic. They're not just soldiers. They're a symbol of his failure."
The corridor ahead was a chaos of smoke and violence. Two of the King's Guard were pinned behind an overturned stone bench, firing crossbows down the hall. Their quarrels weren't aimed at the group, but at a massive, impossible shape further down.
A bear, sleek and dark and far larger than any natural creature, had one guard in its jaws. It shook the man like a ragdoll, a sickening crunch cutting short his scream. Beside the beast, a man with the same golden skin and gray-green eyes as Mercedes stood braced against the wall. He wielded a modified rifle, its barrel humming with a soft, eerie light. He fired, a concussive thump that wasn't gunpowder. The blast wasn't a bullet, but a wave of force that threw the second guard backwards into the wall with a wet, final sound.
The bear dropped its limp victim. It turned, its dark, intelligent eyes locking onto the group. Instead of charging, it huffed, a deep sound that vibrated in the stone floor. Then it began to change.
The transformation was a silent, flowing compression of mass. Fur receded, bones realigned with soft pops, and the beast shrank into the form of a man who stood up from a crouch. He was naked, covered in a sheen of sweat and blood, with the same eyes and smile as Mercedes. His black hair fell to his shoulders. Miguel.
He didn't seem to notice his own state. He strode forward, ignoring Adrian, Cassian, and Kael completely, and pulled Mercedes into a fierce, crushing hug. "¿Estás bien, hermana?" he asked, his voice rough with concern.
She hugged him back just as tightly for a second before pushing him back, her hands on his shoulders. "Sí. Estoy bien. But we have no time." Her eyes were hard, focused. "Debemos matar al rey vampiro."
Miguel sighed, a theatrical, weary sound that was pure brotherly exasperation. He gave her a look that was both fond and deeply resigned. "Tú siempre pidiendo cosas sencillas, ¿no?" He turned his head, his voice lifting to a shout that echoed down the smoky hall. "¡Francisco! ¡Tenemos que matar al rey! ¡Lo pidió Mercedes!"
Further down the corridor, Francisco—who had just placed a fresh, glowing cartridge into his rifle—didn't even look up from his sights. He fired again, the concussive thump sending another guard sliding lifeless along the floor. Without missing a beat, he called back, his voice thick with sarcastic annoyance, "¡Está bien! ¡Ahora cuando termine!"
Adrian watched the exchange, a strange, foreign sensation twisting in his chest. It was familiarity. A messy, unconditional loyalty that had nothing to do with thrones or commissions. He glanced at Cassian, who was staring at the two nahual brothers with a mix of awe and sheer tactical calculation.
Kael moved past Adrian, already shrugging off his torn leather jacket. He tossed it to Miguel. "Cover up. We're heading to the Council Hall. You're part of the procession now."
Miguel caught the jacket with a grunt of thanks, pulling it on. It was tight across his shoulders, but it served. Francisco jogged over to join them, his rifle resting on his shoulder. He gave Mercedes a sharp nod, then his eyes scanned Adrian and Cassian, landing finally on the legitimate prince. His gaze was assessing, unimpressed by titles.
"This is the package?" Francisco asked Mercedes, jerking his chin toward Cassian.
"He's the plan," she corrected firmly. "Adrian's plan."
Francisco's eyes flicked to Adrian, taking in the blood, the daggers, the lethal stillness. He shrugged one shoulder. "The bear likes plans that end with a dead king. Lead on, vampire."
The group reformed, now seven strong. They moved as a spearhead down the grand processional corridor toward the Hall of Ancestors. The fighting here was scattered, disjointed. Some guards fled from the combined force of werewolves and enchanted weaponry. Others, loyal to the end, threw themselves forward only to be cut down by Kael's wolves or dissolved by Francisco's strange rifle.
With every step, the weight in Adrian's pocket—the data-slate with Vorghan's codes, the ghost of the king's order—felt heavier. He had wanted to put Cassian on the throne to save him. Now, with every fallen guard, with every surge forward, the path crystallized into something simpler, more final.
To crown his brother, he would have to destroy their father. Not just dethrone him. End him.
The massive, rune-carved doors of the Hall of Ancestors loomed ahead, still twenty yards away. They were shut. Before them, standing alone in the center of the wide hallway, was Captain Vorghan. He held a long, silver-edged sword loosely at his side. His uniform was immaculate, untouched by the chaos raging through the rest of the court. His shale-colored eyes found Adrian’s, and in them was no surprise, no anger. Only a cold, professional acknowledgment.
Adrian slowed to a walk, then stopped. The others fanned out around him. The sounds of battle felt distant here, muffled by the sheer scale of the space.
Vorghan’s gaze swept over the group: the defiant prince, the weary heir, the shapeshifters, the alpha. He gave a single, slow nod, as if confirming a private bet. "Executor," he said, the title a flat stone dropped between them. "Your thirty-minute window began three minutes ago."
He wasn't barring the way. He was waiting.
Adrian understood. This was the final piece of the transaction, the price beyond the codes in his pocket. Vorghan had given him the means. Now he required a demonstration of the end. He needed to see which way the wind blew before committing his loyalty.
Adrian looked past the captain to the sealed doors. Behind them, the old powers of the court would be waiting, fearful and volatile. He looked at Cassian, standing resolute at his side. He thought of the sentinel crumbling to dust under his touch, of the king’s smile in the Hall of Whispers.
He met Vorghan’s eyes again and gave a single, sharp nod of his own. Then he started walking forward, not toward the captain, but toward the doors. His steps were deliberate, the click of his boots on the marble the only sound in the sudden, watchful silence.
He didn't draw a weapon. He didn't speak. He simply walked, a prince drenched in the blood of his father's guards, leading a rebel heir and a band of his father's oldest enemies toward the seat of all power.
Vorghan watched him pass. He did not move to stop him. As Adrian reached the doors, the captain turned smoothly on his heel, falling into step behind him and to the right, a guard once more, but for a new king.