He was a knight of light… until you turned his world dark.
❤︎ Synopsis. A once-divine knight, consumed by obsession, will stop at nothing to claim the heartless thief he can’t save—and the darkness in him grows with every rejection. In a world of blood and betrayal, love is the most terrifying curse.
♡ Book. Whispers in the Dark (WITD): Subtle Devotion, Lingering Shadows.
♡ Pairing. Yandere! Isekai! Knight x Fem. Reader
♡ Headcanon. Light’s Last Lament – Part 1
♡ Word Count. 1,800
♡ TW. dom + top + older + sadistic + yandere, general non-con + manipulation, rape, BDSM, religious themes, corruption
♡ His Story. In his eyes, your defiance isn’t strength—it’s foreplay.
♡ Yandere! Isekai! Knight who was a paragon of light and virtue when he first woke up in this strange, fantastical world. His armor gleamed like divine fire, his sword blessed by gods he didn’t know, his soul burning with righteous purpose.
You were the antithesis of everything he believed in—a wraith in the shadows, hands stained with theft and betrayal. A creature so small, so fragile-looking, he almost pitied you. Almost.
♡ Yandere! Isekai! Knight who met you after slaughtering a horde of corrupted beasts. You emerged from the carnage like a phantom, scavenging valuables from the corpses with meticulous efficiency.
Blood and filth covered you, yet your hands moved with the elegance of a jeweler. “You’re desecrating their bodies,” he said, his voice firm with disapproval. You didn’t even glance at him.
“And you’re desecrating my patience. Move.”
♡ Yandere! Isekai! Knight who couldn’t understand you, this cold, unfeeling shadow that slipped through the cracks of his world.
You were everything he was supposed to despise—selfish, ruthless, and utterly indifferent to the suffering of others.
But you fascinated him. You were the single thing in this unfamiliar world that didn’t bow to his light.
♡ Yandere! Isekai! Knight who tried to “save” you, convinced that underneath your icy exterior was a soul begging to be redeemed.
He followed you through ruins and wastelands, offering his aid even when you sneered at him. “Why do you care?” you spat once, after he shielded you from a falling blade trap.
His smile was gentle, but his eyes burned. “Because you need someone to care.” You laughed, sharp and humorless, as though his words were the punchline to a cruel joke.
♡ Yandere! Isekai! Knight who began to unravel the more time he spent chasing you. At first, it was small—a hesitation before a kill, a flicker of anger when you mocked his ideals.
But then came the dreams, feverish and relentless, of your cold hands brushing his skin, your cutting voice murmuring his name like a curse.
The gods called it temptation. He called it love.
♡ Yandere! Isekai! Knight who grew darker with every rejection.
“You’re wasting your time,” you said, cleaning blood from a stolen dagger as though the conversation bored you.
“I don’t need you. I don’t want you.” His jaw tightened, his fists clenched, but he didn’t argue.
Instead, he watched you with a quiet intensity that made your skin crawl, as though memorizing every inch of you for the day you would belong to him.
♡ Yandere! Isekai! Knight who started to blur the line between justice and obsession.
He told himself he was protecting you when he cut down the bandits you were bargaining with. He told himself it was mercy when he destroyed the treasure you coveted most, just to see your mask crack for the first time.
“You bastard,” you hissed, your voice trembling with rage.
His lips quirked into a sad smile. “It’s for your own good.”
♡ Yandere! Isekai! Knight who began to twist under your influence, his once-holy purpose eroding into something unrecognizable. The light in his eyes dimmed, replaced by a ravenous hunger that only grew the more you pushed him away.
You noticed the change too late—how his armor, once pristine, now gleamed with the blood of innocents. How his prayers grew quieter as his gaze darkened. How his love for you, so pure and selfless at first, had curdled into something monstrous.
♡ Yandere! Isekai! Knight who finally snapped after a deadly argument in the depths of a cursed labyrinth.
“You don’t even know how to feel,” you spat, shoving him away after he killed a creature you’d intended to tame. “You’re just a puppet of your gods, blindly following orders like a fool.” His expression, once soft and pleading, twisted into something cold and terrifying.
“And you’re nothing but a heartless thief who wouldn’t know loyalty if it stabbed you in the back,” he growled.
Before you could reply, he grabbed your wrist, his grip bruising. “You’re mine, little mouse. Whether you want to be or not.”
♡ Yandere! Isekai! Knight who let his darkness consume him for your sake. The holy knight who once preached kindness now stood atop a mountain of corpses, his blade slick with gore, all to carve a path to you.
“I’ve sacrificed everything for you,” he said one night, his voice trembling with a mixture of rage and desperation. “My honor, my faith, my soul. And you still look at me like I’m nothing.” You didn’t reply, but the flicker of fear in your eyes was all he needed.
♡ Yandere! Isekai! Knight who finally realized that he didn’t want to save you—he wanted to break you. To drag you down into the darkness with him, where you couldn’t escape. Where you couldn’t deny him.
“You’ll love me eventually,” he whispered one night, as you lay bound in the ruins of your latest heist. His lips brushed your ear, sending a shiver down your spine. “And even if you don’t, I’ll make sure no one else ever has you.”
♡ Yandere! Isekai! Knight who finally snaps when your defiance pushes him past the edge of reason. He drags you into the cold, unlit depths of his fortress, where the walls are damp, the air suffocating, and no one can hear your screams. His towering frame casts shadows that seem to devour you whole, and the sound of the door locking echoes like the toll of a bell.
“You’ve pushed me far enough, little mouse,” he growls, his voice low and dangerous. “Now, you’ll learn what happens when you deny me.”
♡ Yandere! Isekai! Knight whose massive hands bind your wrists in iron shackles, your delicate frame trembling as he steps closer. He doesn’t bother hiding the hunger in his eyes anymore—those darkened embers that burn with possession and rage.
“You’ve been such a cruel little thing,” he murmurs, his fingers trailing down your throat with a gentleness that contrasts the brutal grip on your waist.
“Do you think I’ll let you get away with it? That I’ll keep begging for scraps of your attention?”
♡ Yandere! Isekai! Knight who revels in the power imbalance as he looms over you, his body dwarfing yours in every way. He tears at your clothes with ease, shredding them as if they were nothing more than cobwebs.
“Look at you,” he sneers, his tone dripping with dark amusement. “So small. So fragile. Do you even realize how easy it would be for me to break you?”
♡ Yandere! Isekai! Knight whose touch is equal parts punishing and worshipful as he forces you to your knees. His hands grip your hair, yanking your head back so you’re forced to meet his gaze.
“You’ve made me into this,” he says, his voice trembling with barely restrained fury. “A monster. A man who dreams of ruining you every night. And now, I’ll show you just how far you’ve fallen with me.”
♡ Yandere! Isekai! Knight who makes you feel every inch of his strength as he takes you, his movements rough and unrelenting. The sound of your cries only spurs him on, his gritted teeth pulling into a feral grin.
“Scream all you want,” he growls, his hand pressing against the small of your back to force you down. “No one will hear you. No one but me.”
♡ Yandere! Isekai! Knight who marks you with bites and bruises, the sharp sting of his teeth drawing blood that he licks away with a dark reverence.
“You look better like this,” he murmurs, his voice husky and thick with lust. “Covered in me. Marked by me. No one else will ever touch you now. No one else will dare.”
♡ Yandere! Isekai! Knight who delights in your struggles, the way your smaller hands push against his broad chest to no avail. He pins you down with a single hand, his other tracing the red lines his gauntlets left on your skin.
“Keep fighting,” he whispers, his breath hot against your ear. “It only makes this more satisfying.”
♡ Yandere! Isekai! Knight whose size becomes its own form of punishment, stretching you past your limits until tears streak your cheeks.
“You can take it,” he murmurs darkly, his lips brushing the shell of your ear. “You’re mine. Your body knows it, even if your heart doesn’t.” His hips slam against yours, each thrust claiming you more thoroughly than the last.
♡ Yandere! Isekai! Knight who makes you beg, even as you curse him. He slows his pace just enough to drive you mad, his hands gripping your hips with bruising force.
“Say it,” he demands, his voice a low growl. “Say you belong to me.”
When you spit a defiant “never,” his laugh is cruel and guttural. “Then I’ll just have to fuck the words out of you, won’t I?”
♡ Yandere! Isekai! Knight who doesn’t stop until you’re trembling, broken beneath him, your body a canvas of his desire. His hands trace over your battered skin with a gentleness that contrasts the brutal passion of his actions.
“You’ll learn to love me,” he whispers, his lips pressing against your forehead like a twisted promise. “Even if I have to tear you apart to make it happen.”
♡ Yandere! Isekai! Knight who stares down at your exhausted form with dark satisfaction, the sight of your bruised and bloodied body feeding his insatiable hunger.
“You look beautiful like this,” he murmurs, his voice soft but dripping with possessiveness. “Ruined. Tamed. Completely mine.”
♡ Yandere! Isekai! Knight who, in the end, no longer cared whether you loved him or not. Your coldness only made his desire burn hotter, his need to possess you more consuming.
You were his treasure, his obsession, his little mouse. And no amount of hatred or defiance would change that.
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𝐆𝐨𝐝'𝐬 𝐏𝐫𝐨𝐭𝐚𝐠𝐨𝐧𝐢𝐬𝐭 