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English
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Part 1 of ancestor kaname au
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Published:
2026-04-17
Updated:
2026-04-17
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3,549
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1/?
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Five Days

Summary:

(Ancestor) Kaname forgets all the memories of his current life as Juri and Haruka’s child, and wakes up to the sight of a beautiful and irate hunter feeding from him.

“Get this freak off me!” the boy under him shouts, and the outrage in his voice has the specific pitch of someone who has been waiting for a third party to appeal to.

The one in the doorway opens his mouth. Closes it. Looks at Kaname, then at the silver-haired boy, then at the general situation with an expression of diplomatic suffering. “Am I,” he attempts, “interrupting something?”

“Yes,” Kaname says.

“No!” the boy says, at the same volume, half a second later.

Notes:

My comments aren't a discussion forum......please take that elsewhere, I'm moderating my comments again.

---------

I read this story of Zero flying back in time to Kaname in the past (https://archiveofourown.org/works/65368966) and felt incredibly impatient and sordidly distraught at the lack of things to consume (not the author’s fault – it’s all on me) that I decided to write my own version of ancestor Kaname (....as if that isn’t the whole history of how I started writing.)

I’ve only written AUs for Vampire Knight until recently since I never completed the series but I’m now starting to understand the allure of writing more canon content. Anyway, I’ll write more notes at the end about the whole idea behind this, it’s not fully formed but I will try to finish it at some point regardless.

Also please just read this with an empty brain & open heart, this is loosely based on the canon world but 100% written on vibes……

(See the end of the work for more notes.)

Chapter 1

Notes:

(See the end of the chapter for notes.)

Chapter Text

The room comes to him in pieces.

Stone and old wood, the smell of cold air through a window left open somewhere above, candlelight throwing long shadows across unfamiliar walls.

Kaname stands in the center of it and takes stock with the unhurried patience of someone accustomed to waking in strange places, in strange centuries, and finding the world rearranged around him. It is not distressing. It simply requires orientation.

He knows what he is. He knows the weight of his own age, the particular quality of his own hunger, the way his awareness extends through a room before his body bothers to turn. What he does not know is the year, or why the air tastes faintly of gunpowder and something else beneath it, something that pulls at the back of his throat in a way he finds immediately interesting.

The door opens and the source of it walks in.

Kaname goes still.

He is young, this one, with the particular kind of beauty that arrives without effort or awareness, the kind that makes looking away impossible. Silver hair that catches the candlelight and holds it. Eyes the color of pale ice that move across the room with a sharpness that registers threat before it registers anything softer. He carries himself like something that has learned to take up less space than it deserves, shoulders drawn in, jaw set, the controlled posture of a person accustomed to being somewhere they’d rather not be.

And underneath all of it, that smell. Bright and copper-edged and reaching, the blood moving fast beneath skin stretched over the fine architecture of his throat.

The boy looks at him with unconcealed displeasure. “You’re here,” he says, as though confirming something unfortunate. “Let’s get this over with.”

“By all means,” Kaname says.

The boy’s eyes cut to him, wary, like he’s waiting for the shape of a trap. Then he crosses the room and nods toward the bed. “Sit down.”

Kaname watches him and tries to understand the context he’s been placed in. Someone has made an arrangement. The boy knows him, or knows whatever version of him exists in this time, and the displeasure is worn-in, the kind that belongs to an ongoing situation rather than a first impression.

A gift, he thinks, in the oldest register of himself, the part that predates sentiment. Whatever else this arrangement is, whoever made it and for whatever reason, something with that face and that blood has been delivered to him, and he intends to understand why.

He keeps the thought behind his teeth and sits.

The boy swings one knee across him and settles his weight across Kaname’s thighs with the practiced efficiency of someone for whom this position has no connotation beyond the functional. He doesn’t look at Kaname’s face. His hands find Kaname’s shoulders for balance, and he leans in toward the juncture of his neck.

This, Kaname thinks, requires significant revision of his earlier read.

The boy is close enough now that Kaname can see the fine tension in his jaw, the deliberate quality of his breathing, can feel the warmth radiating off him in a way that has nothing to do with body heat and everything to do with proximity. He smells extraordinary. Up close the blood-smell deepens into something more complex, layered with exertion and cold air and underneath it the particular note of someone fighting the thing their body wants.

The boy’s mouth opens against his neck, and Kaname’s hand settles at the small of his back.

Then, following the weight of him in his lap and the natural tilt of his hips, following the oldest and most unhurried logic Kaname knows, his palm slides lower and comes to rest against the full curve of his ass, easy and warm, fingers curling slightly at the swell of it.

The boy’s mouth goes still against Kaname’s neck for a fraction of a second, then continues. Kaname keeps his hand where it is. The boy’s hips and shoulders go utterly still, a quality to the stillness that Kaname reads, correctly, as deliberate, as a careful choosing not to react. His thumb moves in a slow arc across the fabric and he feels the boy exhale against his neck, controlled and just slightly uneven.

Then a hand closes around his wrist, firmly but without anger, and lifts his palm away from the curve of his ass and relocates it to the mattress beside them.

Kaname allows it. He doesn’t replace his hand.

He turns his attention instead to the sensation of being drunk from, the pull of it, the particular quality of this boy’s hunger, which is not soft, which takes rather than receives. When the boy finally pulls back he takes a breath that’s slightly uneven, and the color in his face has risen, bloomed high across his cheekbones and down the bridge of his nose.

He drags the back of his hand across his mouth. He doesn’t quite meet Kaname’s eyes.

“You’re insufferable,” he says. “Even just sitting there.”

“You could have chosen a different position,” Kaname says.

The boy’s jaw tightens. “Don’t.”

“I’m only noting that the arrangement seems to be yours.”

“I said don’t.” He straightens on Kaname’s lap, color blazing, and finally looks at him directly, which turns out to be a mistake, because the candlelight is doing something unconscionable to the line of his jaw and the flush of his mouth, and Kaname looks at him for a long moment, at the silver hair slightly disturbed and the irritation that hasn’t fully covered over the other thing sitting underneath it, the thing the boy doesn’t appear to know is visible.

His hand rises without permission. That is what it feels like, that his body has arrived at a conclusion his mind is only now catching up to, something in him that has been patient for a very long time making a quiet, certain decision.

He reaches up, takes the boy’s jaw in one hand, tilts it, and kisses him. It’s the kiss of someone who has considered the matter and arrived at a conclusion, Kaname’s thumb resting against the hinge of his jaw and his other hand rising to the back of his neck, and for one suspended moment the boy doesn’t move at all.

Then he goes rigid. Both hands hit Kaname’s chest and shove.

Kaname pulls back, the shove not doing much but simply as a form of acknowledgment to the displeasure expressed. His hands withdraw and he watches the boy scramble to the far edge of the mattress, breathing hard, color blazing all the way down his throat.

“What,” the boy says, the word coming out stripped of its usual aggression, raw and slightly lost, “was that?”

Kaname looks at him. He doesn’t say what he is thinking, which is that the answer is obvious, or that the boy kissed him back for one full breath before he remembered he wasn’t going to, or that whatever this arrangement is in this time and place is doing nothing to change what is plainly, materially true about the person sitting across from him.

He says nothing at all. He watches the boy pull himself back together with visible effort, anger assembling over the shock like armor finding its latches.

He sits in the candlelight and thinks, patient and without any intention of sharing it, that he would very much like to know his name.

The boy stares at him with his hands still pressed to Kaname’s chest and his color still high, and Kaname looks back at him. His hand rises again.

He gets his fingers into the silver hair at the back of the boy’s head, and when he pulls him in the second time there is less ceremony about it, less deliberateness, the kiss pressed harder and held longer. His other hand finds the curve of his lower back and draws him in, grip closing on the back of his thigh and then, settling, on the full weight of his ass, fingers pressing into the flesh of it with a possessiveness that makes no apology for itself.

The boy makes a sharp sound against his mouth. His hands push, hard, both palms flat against Kaname’s chest. Kaname shifts his weight forward, tips them, one smooth rotation that puts the boy on his back against the mattress. The boy’s shoulders meet the surface and Kaname catches his weight on one hand beside his head, and the push becomes meaningless. The boy blinks up at him, startled out of his composure for one unguarded second, and Kaname takes advantage of it. He kisses his jaw, the corner of his mouth, the hinge of it, comes back to his lips and stays there, because the boy’s mouth is extraordinary and this is worth taking time with.

“Stop,” the boy grits out, turning his face, and Kaname follows it and kisses the side of his jaw instead, unhurried. “I said stop, get off—” A hand shoves at his shoulder. Kaname doesn’t move. He trails his mouth down to the side of the boy’s throat and feels his pulse jump against his lips, feels the full-body flinch and the effort it takes to lock it down again, feels the failure in how the boy’s breath empties.

He is worth the effort, this one. That is the thought that sits at the front of Kaname’s mind with the weight of something obvious, something he’s only noticing because he has the patience to look. Most things in his long life have not been worth the effort. They have been easy, offered up by people who understood the arithmetic of proximity to power, and there is nothing interesting in easy. But this, the resistance and the color in his face and the pulse spiking under Kaname’s mouth even as he turns his face away, the fact of him, the particular fierce beauty of someone who has no interest in being wanted and is wanted anyway, this is a different quality of thing entirely.

He gets a hand under the hem of his shirt, palm flat against the warmth of his side, and the boy’s breath hitches before he can stop it.

“You—” he starts, and the word dissolves when Kaname comes back up to his mouth, one hand in his hair and the other still mapping the architecture of him with the thorough interest of someone taking inventory of something they intend to keep. The boy’s hands are at his shoulders, not quite pushing, his fingers curled in the fabric of Kaname’s shirt in a way he’s probably unaware of, and the flush on his face has spread to his throat and past it, and Kaname is in the middle of following it with his mouth when the door opens.

He doesn’t look up immediately. The door opening is not, in his understanding of the world, a reason to stop what one is doing.

“I—” says a voice from the doorway.

Kaname turns his head and looks at the new arrival with the mild displeasure of someone interrupted mid-sentence. He is young, this one too, fair-haired and wide-eyed, standing in the door frame with his hand still on the knob and an expression of profound uncertainty on his face, his gaze moving between Kaname and the boy pinned beneath him with the rapid, helpless quality of someone’s eyes looking for somewhere safe to land and failing.

Kaname regards him the way he would regard a footman who had entered without knocking. The silence says everything he would otherwise have to articulate.

“Get this freak off me!” the boy under him shouts, and the outrage in his voice has the specific pitch of someone who has been waiting for a third party to appeal to.

The one in the doorway opens his mouth. Closes it. Looks at Kaname, then at the silver-haired boy, then at the general situation with an expression of diplomatic suffering. “Am I,” he attempts, “interrupting something?”

“Yes,” Kaname says.

“No!” the boy says, at the same volume, half a second later.

The one in the doorway looks between them again. He appears to be sincerely weighing his options, and finding all of them poor.

Kaname turns back to the boy beneath him, who is staring at him with an expression of absolute fury, cheeks still blazing, hair disturbed, both hands now pressing very firmly against his chest and this time with the clear intention of being acknowledged. Kaname looks at him. He is, objectively, even more extraordinary in this state, and Kaname takes a moment to note this before the rest of the situation catches up with him.

 


 

Kaname sits across from Kaien Cross in a study that smells of old paper and candle wax, watching the man arrange tea with the unhurried precision of someone playing for time. The man is human, or was human once, the scent of it still present underneath something else Kaname doesn’t have context for. He pours with steady hands and doesn’t look up.

Kaname accepts the cup when it’s offered and doesn’t drink. He watches Cross settle back into his chair, watches the way the man’s gaze moves across his face with the particular quality of someone looking for damage and trying not to let the search show.

“So,” Cross says, after the silence has stretched long enough to become its own statement. “The last thing you remember is the estate.”

“Yes,” Kaname says.

Cross’s mouth does something complicated. Not quite a smile, not quite a grimace, the expression of someone who has heard worse news and is trying to calibrate how much worse this particular version is. His fingers curve around his cup and he looks down into it as though the tea might offer guidance.

“And the uprising?” he asks quietly.

“The beginning of it,” Kaname says. “Humans with weapons they thought could kill us. They were calling themselves hunters.” The memory sits in his mind with the clarity of something recent rather than something separated by what he suspects is a considerable gap. “I chose sleep rather than watch them tear themselves apart trying.”

Cross looks up at that, something passing across his face too quickly to name. “That was ten thousand years ago.”

The number sits in the air between them. Kaname regards him with the mild interest of someone being told a fact about the weather. “Then I’ve been asleep for ten thousand years,” he says. “And you are?”

“Kaien Cross,” the man says, and there’s something careful in the way he says it, the particular quality of someone introducing themselves to something significantly more dangerous than they are. “I’m the headmaster of Cross Academy.”

“Academy,” Kaname repeats, turning the word over.

“A school,” Cross clarifies. “For vampires and humans both. We—” He stops, recalibrates. “The world has changed significantly since you went to sleep. The hunters still exist, but there are those of us who believe in coexistence. The academy is an experiment in that direction.”

Kaname looks around the study, at the books and papers and the particular quality of the room that suggests institutional authority rather than personal power. A school. Humans and vampires together. The idea would have been laughable ten thousand years ago, would have gotten whoever proposed it killed for the entertainment value alone.

“I see,” he says, though what he sees is incomplete, fragmented. “And I’m here because?”

“You have a relative here, a descendant – a sister to an extent.”

“I see…and the arrangement?” Kaname asks, tone mild, as though he’s simply confirming details rather than probing at the edges of something specific. “The boy who was in my room earlier.”

Cross’s expression shifts, something wary entering it. He sets his cup down with deliberate care. “Zero,” he says. “Zero Kiryu. You’ve been giving him your blood for an arrangement for months now. The actual timeline, I’m uncertain.”

“I’m giving this boy my blood,” Kaname repeats, the words shaped like a question without quite becoming one.

“Yes.” Cross’s jaw works as though he’s chewing on something unpleasant. “Pureblood blood helps with—” He stops. “Zero was turned four years ago. Against his will. By a pureblood. Without regular access to pureblood blood, he’ll degenerate. Fall to Level E.”

The information settles into place. Level E. Kaname remembers those, the servants at his estate, the ones who’d lost themselves to hunger and become little more than beasts. Useful for certain tasks, disposable for others. The boy with the silver hair and sharp eyes is on his way to becoming that, and drinking Kaname’s blood is what’s keeping him human enough to hate what he is.

“His family?” Kaname asks, as though the thought has only just occurred to him.

Cross goes very still. “Hunters,” he says quietly. “They were killed by the same pureblood who turned him.”

The picture clarifies itself further. A hunter family slaughtered, a boy turned against his will, forced to become the thing he was raised to destroy.

Ten thousand years ago, Kaname would have found this amusing in a distant sort of way, would have noted it and forgotten it in the same breath. Now he finds himself turning it over, examining the shape of it, the particular quality of cruelty in making someone into the thing they hate most.

“And he agreed to this arrangement,” Kaname says.

“He understands what’s at stake,” Cross says, the words coming out clipped. “What he’ll become if he doesn’t.”

Kaname looks at Cross, at the careful way he’s holding himself, at the protective quality in his posture that suggests there’s more to this than simple logistics. “What is he to you?”

Cross’s gaze moves away, toward the window, toward something Kaname can’t see. When he speaks again his voice has lost some of its earlier steadiness. “He’s my son. I took him in after it happened.”

The information settles. Not a servant, then. This man’s son, a turned hunter who hates vampires, coming to Kaname’s room every few days to drink his blood because the alternative is worse.

Kaname thinks of the boy’s face in the candlelight, the flush on his cheeks, the way his breath had gone uneven when Kaname’s hand had settled on him. He thinks of the silver hair and the sharp eyes and the particular fierce beauty of someone who has no interest in being wanted and is wanted anyway.

“I see,” Kaname says, though what he sees is incomplete, a picture with pieces missing that he intends to find. “And this school of yours. He attends it?”

“He is a student,” Cross says. “The Day Class. Human students.”

“A hunter in a school run by a human who believes in coexistence,” Kaname observes. “And at night he drinks from a pureblood to keep from becoming a monster.” He pauses. “The world has changed.”

Cross’s mouth does something that might be the beginning of a smile or might be something else entirely. “Yes,” he says quietly. “It has.”

Kaname sets his untouched tea down. He thinks of the way Zero had moved through the encounter with the rigid efficiency of someone performing a task he’d rather not be performing, the worn-in resentment, the hatred sitting just underneath the surface of every gesture. He thinks of the kiss, the fraction of a second before Zero had pushed him away when his mouth had softened and responded before his mind had caught up.

“The arrangement,” he says, tone still mild. “How often does he come?”

Cross’s expression shutters. “Every five days,” he says, after a pause that suggests he’s deciding how much to disclose. “It was meant to be straightforward. Blood, nothing else.”

“Mm,” Kaname says, noncommittal.

Cross watches him with something that might be wariness or might be resignation. “Kaname—” He stops. His hand comes up to the bridge of his nose and stays there. “Zero hates vampires. All vampires. What happened to him, what he was forced to become, it destroyed everything he thought he knew about himself. He tolerates the arrangement because he has to. Because the alternative is falling into madness. But that’s all it is to him. Survival.”

“I understand,” Kaname says mildly, and stands.

Cross stands as well, and there’s something in his posture that suggests he wants to say more, wants to add some caveat or warning or request, but he doesn’t. He just nods, once, and watches Kaname move toward the door.

Kaname pauses with his hand on the frame. “This academy of yours,” he says, not turning around. “I assume I’m meant to stay here, I assume I’m also behind the same cause.”

“Of course – and yes, you are a proponent of the cause,” Cross says carefully.

Kaname nods, once, and steps into the hallway. He closes the door behind him with quiet care and allows himself, in the privacy of the empty corridor, to think about silver hair and sharp eyes and the particular quality of breath going uneven against his neck.

A turned hunter who hates what he is, who comes to drink from Kaname because the alternative is falling into something worse, who kissed him back for one full breath before he remembered he wasn’t going to.

Zero Kiryu.

The name sits in his mind with the weight of something worth remembering.

Five days.

Notes:

The whole premise is just Kaname waking up with only his original ancestor memories to Zero just about to drink from him, getting enamored by Zero and wrongfully assuming Zero is there to sleep with him in exchange for blood.

I, the author, have not plotted anything beyond this, but I envision a story where everyone just hammers a plastic mallet at ancestor Kaname for perpetually anticipating something perverted with Zero (BONK!)…who knows if plot will arrive eventually. I’m also gonna pretend there is true pacificism between humans and vampires but it's not a central theme.....for now....

I also had a random smut scene I wrote for this dynamic specifically, I'll just upload it on the series when it's ready.

Notes:

One l last caveat is that I never finished Vampire Knight and I don't know if I'm ever interested enough to watch it again or read it. I really write these days out of the love for the characters and the world the mangaka has created for them, not so much the story itself...I mean, I don't really care for Yuuki as a character for one (like I don't hate her, she's just boring and forgettable for me.)

What I don't know about the story, I literally just research or read fan wikis.

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