The night air over Camelot was sharp and clean, the sort of cold that made breath bloom in puffs of fog and turned every whispered vow into a plume of white. Lancelot kept to the shadows as he crossed the courtyard, his cloak blending with the gloom. He had fought beside Arthur in a dozen battles and feared no man, yet his hands trembled now. Not from the chill, but from the knowledge that what he was about to do would mean death if discovered. The door ahead led not to a war‑room or training yard, but to the queen's private garden—a sanctuary of roses and silver fountains nestled between high walls. To be caught there at this hour with his liege lord's wife would be treason. His heart hammered as loudly as any war drum; he wondered if the sentries on the ramparts could hear it.
Guinevere waited in the moon‑washed arbor, a pale form amid vines laden with winter blooms. Her cloak was drawn tight around her shoulders, golden hair hidden beneath a hood. When she saw him she stepped forward, gloved fingers reaching out. There were a thousand words he wanted to say—proclamations of love, apologies, pleas for her to send him away. Instead he sank to one knee in deference, not to her crown but to the weight of his own feelings. "Your Majesty," he whispered, keeping protocol for its own sake. "This is madness."
She huffed a soft laugh, the barest hint of her usual wit slipping between clenched teeth. "You always were more comfortable facing a thousand men than a woman's heart," she said. When her fingers brushed his cheek the chill in him melted. "We could have been content to steal glances across a hall, to live out entire lives longing. But I have lived in gilded cages for as long as I can remember. I cannot abide another."
He wanted to say that he would burn the cages, topple the walls, turn kingdoms to ash for her. He wanted to promise her whole worlds. Yet in the next breath, boots scraped on stone beyond the garden gate. Lancelot tensed. "Someone's coming," he breathed. His instincts screamed for him to draw his sword. He had snuck past two patrols; this had been a calculated risk. Now it was collapsing around them.
Before he could move, something else happened—a shimmering in the air, as if reality itself were peeling back. Words appeared before his eyes in lines of pale blue light. They floated in the air between him and Guinevere, visible only to him. **"Knight Oath System activated,"** the glowing letters proclaimed. **"Awaiting first oath."**
His mind stuttered. Perhaps he had gone mad. Voices filled his head, stately and genderless, reading out an instruction list only he could hear: **"Through oath you gain power. Through oath you pay a price."** A system? Like the fairy tales the scribes whispered of Eastern cultivators who gained power by breaking heaven's rules? But those were stories. He blinked hard. The words remained. **"Swear."**
"Lance?" Guinevere's hand tightened on his arm, dragging him back to the moment. The gate rattled. He could hear armor clinking, could smell torch‑smoke. He could do nothing to protect her—not unless he embraced the madness in front of him. If it was a dream, then his death would be quick. If it was real…
"I swear," he said, under his breath, the vow dropping into the cold like a stone. He spoke from the marrow of his bones, focusing on the woman before him. "I will protect Guinevere at all costs."
The glowing script shifted instantly. **"Holy Aura unlocked,"** it declared. **"Three years of lifespan deducted."** Pain ripped through him—searing, icy, a tearing at the edges of his soul. He gasped as if stabbed and doubled over. The world dimmed, then flared. An unseen warmth exploded outwards from his chest, wrapping around them both in a translucent shell. Guinevere's eyes widened as a golden shimmer coalesced around her, a barrier of pure light. Somehow he knew instinctively what it was: a protective aura that would turn aside blades and bolts for as long as his strength held. Somewhere beyond the pain, the disembodied voice chuckled. **"Oath accepted."**
The garden gate flew open with a crash. Steel flashed. "By order of King Arthur!" shouted a soldier as half a dozen armored men surged into the arbor. Their helms gleamed, lion sigils catching the moonlight. They had pikes and swords raised, expressions grim beneath their visors. Lancelot surged to his feet, drawing his own blade in one fluid motion. The Holy Aura pulsed; his sword glowed faintly in his hand. Time stretched. He'd fought battles on muddy fields and in burning castles, but never with the fate of his heart—and perhaps his soul—balanced upon an oath.
The first guard thrust a pike toward Guinevere. The golden barrier flared and the weapon slid harmlessly aside. A second swung a sword at Lancelot's head; he parried, feeling impossible strength surge through his limbs. It was as if his bones had been forged anew. He struck back with the flat of his blade, unwilling to draw blood in the queen's garden, but every contact sent shockwaves through his arm. He danced between blows, placing himself between Guinevere and the attackers. He could hear the System murmuring numbers in the back of his mind—seconds, years, lives—all sliding together like beads on a string.
But more guards poured in, and he was only one man. The aura shield flickered where too many blades hit at once. He stumbled, dragged down by the weight of mail and the creeping weakness that accompanied the System's cost. The aura dimmed slightly. He tasted iron; whether it was blood or magic he did not know. A gauntleted fist slammed into his jaw. Stars exploded behind his eyes. Then iron shackles snapped around his wrists, biting his skin.
"Enough!" boomed a voice that silenced even the clash of swords. The soldiers fell back, leaving him on his knees in the trampled rose bed. Through the haze he saw a figure step into the light—broad‑shouldered, crowned, familiar. King Arthur's stern face was carved from stone. There was no anger in his eyes, only cold resignation.
"In the name of the king," Arthur said quietly, almost sadly, "Sir Lancelot du Lac, you are under arrest for treason and adultery." His gaze flicked to the queen, his jaw tightening. "And you, Guinevere… you will answer for your betrayal."
Lancelot's breath came in ragged gulps. The Holy Aura winked out entirely. He tried to lunge forward, to shield Guinevere with his body, but chains bound him too tightly. The System's voice whispered once more in his mind, no longer amused. **"Consequence applied. Oath maintained."** Three years of his life had been carved away, and all he had earned was the right to die with honor.
He looked up at the man he had once called brother, then back at the woman he loved. Questions exploded in his skull. How long had Arthur known? What had he seen in the future to orchestrate this? And what in the name of the gods had he just bound himself to? As the soldiers dragged him to his feet, the only certainty was that everything had changed. The chapter of his life written by loyalty and duty was over. A new one—written in blood, oath and forbidden love—had just begun.