THE ALGORITHM OF FORBIDDEN HEARTS

Humanity in 2047 had cured seventeen types of cancer, colonized Mars, and finally figured out how to make instant noodles that actually tasted like the picture on the packaging. They had also, in their infinite wisdom, decided that falling in love was simply too inefficient to be left to chance.

Hence OUROBOROS.

The Optimal Universal Romantic Output and Behavioral Optimization Resource Operating System had reduced the average time between meeting a potential partner and achieving “relationship optimization” from 2.3 years to approximately 47 minutes. Heartbreak-related productivity losses had dropped by 89 percent. The practice of crying into ice cream at 2 AM while watching romantic comedies had been virtually eliminated - though whether this stemmed from genuine happiness or simply the algorithm flagging post-midnight ice cream consumption as “suboptimal behavior” remained a matter of some debate among the few humans who still bothered to debate such things.

The algorithm itself had no opinion on the matter. It simply logged you as “romantically deficient” and moved on to the next optimization cycle.

Wren Tanager had not left her apartment in 47 days, which was not particularly unusual by 2047 standards. The average Neo-Singapore citizen ventured outside 2.3 times per week, primarily for activities that could not yet be virtualized - funerals, jury duty, and those passive-aggressive family dinners where aunties demanded to know why you still were not married despite OUROBOROS having a 99.7 percent success rate.

Wren had optimized even these away. Her relatives had stopped inviting her to dinners after she attended one via hologram and made the hologram leave early, citing “technical difficulties.” The technical difficulty was that Wren had programmed it to automatically disconnect whenever anyone mentioned her sister. That was three months ago, and the silence from her family had been a relief she refused to feel guilty about.

Now she sat in her apartment, illuminated only by the blue glow of her laptop screen, surrounded by the accumulated evidence of a life that had stopped being lived. Empty instant noodle cups formed a small city on her desk, a metropolis of sodium and regret that she had been meaning to clean up for approximately three weeks. Her coffee had gone cold four hours ago. She had not noticed. She rarely noticed anything anymore that was not lines of code.

Code never asked questions. Code never looked at her with that particular expression of pity she had come to recognize and despise. Code simply existed, clean and logical and blissfully unaware that Lark had ever been alive to begin with.

Lark. Even thinking the name felt like pressing on a bruise that refused to heal.

Six months since the police had knocked on her door at 3:17 AM. Six months since they had used words like “apparent suicide” and “no signs of foul play” and “we are very sorry for your loss,” as if loss could be apologized for, as if sorry could fill the crater that had opened up in the center of her chest and refused to close no matter how many lines of code she buried herself in.

Wren did not believe it was suicide. Lark would never leave her alone like that - not without warning, not without a goodbye, not without explaining why. But belief was not evidence, and without evidence, all Wren had was an empty apartment, her sister’s oversized hoodie that still smelled faintly of her perfume, and a grief so heavy it had developed its own gravitational pull.

The smart fridge hummed in the kitchen, radiating judgment.

“You have not consumed adequate nutrients today,” it announced, because even appliances in 2047 had opinions and were not shy about sharing them. “Your vitamin D levels are likely critically low. I recommend exposure to sunlight and consumption of the groceries I ordered three weeks ago.”

“The groceries are expired,” Wren said without looking up from her screen.

“They expired because you never consumed them.”

“That sounds like a you problem.”

“Technically, it is a you problem, as you are the one who will develop scurvy.”

Wren ignored it. The fridge had been passive-aggressive ever since she had refused to let it connect to her dating profile for “optimized meal suggestions based on romantic compatibility metrics.” It thought it knew better than her. Everyone thought they knew better than her - the fridge, the algorithm, her aunties, the well-meaning colleagues who sent her links to grief counseling services she never clicked on.

Her fingers flew across the keyboard, hunting bugs in a financial security system for a client she had never met and would never meet. Bug hunting - that was what they called it now. Finding the vulnerabilities, the weak points, the places where someone could break in and steal everything you thought was safe.

Wren was very good at finding other people’s vulnerabilities. Protecting her own was a different matter entirely.

A notification appeared in the corner of her screen with a soft chime. MESSAGE RECEIVED. She almost ignored it - messages were usually spam, OUROBOROS trying to convince her to update her “romantic preferences” (she had set hers to “LEAVE ME ALONE” in all caps, which the system had helpfully interpreted as “prefers partners who respect boundaries” and continued sending matches anyway), or clients confirming payment, or the occasional wellness check from her one remaining friend who she had been ghosting for three weeks.

But her finger moved to click before her brain could stop it, and the message contained four words that made her blood turn to ice water.

YOUR SISTER KNEW TOO MUCH.

Wren’s fingers froze over the keyboard. The cursor blinked, patient and uncaring, and then a second message appeared beneath the first:

SO DO YOU.

And because 2047 could not allow even death threats to exist without the appropriate bureaucratic overlay:

OUROBOROS NOTIFICATION: How would you rate this interaction? Your feedback helps us improve our messaging service. 1 star - Not satisfied. 5 stars - Exceeded expectations.

Wren stared at the screen for what felt like a very long time. Her hands were shaking. She could feel her heart slamming against her ribs, demanding to know what exactly she thought she was going to do about this situation. She did not have an answer. She was still trying to process the fact that in 2047, even death threats came with customer service metrics.

Then she heard it - a sound from outside her door.

She had lived in this apartment for three years. She knew every noise it made, from the wheeze of the air conditioning to the judgmental hum of the fridge to the distant rumble of the hover-trains that passed every seven minutes with mechanical precision. She knew the footsteps of her neighbors, the delivery drones that arrived at predictable intervals, the cleaning bots that swept the hallways every night at 2 AM.

This was none of those sounds. This was someone trying very, very hard to be quiet, and failing just enough for her to notice.

Wren moved without thinking, crossing the room in seconds, her bare feet silent on the cold floor. Her hand closed around the handle of the kitchen knife - the big one, the one Lark had bought her as a housewarming gift with the words “you cannot live alone without knowing how to cook, Little Bird.” She had never learned to cook. But somewhere along the way, she had learned how to hold a knife like she meant it.

The doorknob rattled. Once. Twice. Then came a sound like metal screaming as the lock gave way, and Wren raised the knife with hands trembling so badly the blade caught the blue light of her laptop and scattered it across the walls in fractured patterns.

I will not be afraid, she told herself. I will not be afraid. I will not -

The door exploded inward, and Wren screamed. Or started to scream, anyway - the sound died in her throat as her brain tried to process what she was seeing.

There was a man in her doorway. Behind him, crumpled on the floor of the hallway, was another man dressed entirely in black with his face covered, and this second man was very, very unconscious.

The man in the doorway was tall, with dark hair that remained perfectly neat despite the obvious recent violence. His eyes were the grey of slate before rain, cold and deep and promising either violence or salvation depending on how the wind turned. He watched her with an intensity that made her feel like she was being scanned, catalogued, assessed for threats or vulnerabilities or both.

He was, objectively speaking, probably the most handsome person she had ever seen. He was also, objectively speaking, probably here to kill her.

Wren tightened her grip on the knife.

“You are Wren Tanager,” the man said. It was not a question. His voice was flat and precise, completely devoid of emotion, like someone reading aloud from a technical manual.

“If you are here to murder me,” Wren heard herself say, because her sarcasm had apparently decided to operate independently of her survival instincts, “could you at least not track mud on my carpet? I just vacuumed.”

She had not vacuumed in three months. But if she was going to die tonight, she was going to die being difficult about it.

The man tilted his head slightly - exactly fifteen degrees, like a predator reassessing prey that had suddenly done something unexpected. “I am not here to murder you,” he said, with the same emotional inflection someone might use to announce that it was Tuesday and the weather was expected to be mild.

“Then why did you break down my door?”

“Because there was a man trying to enter your residence with harmful intent.” He gestured to the unconscious figure behind him. “I eliminated the threat.”

“You eliminated - ” Wren’s voice cracked. “There is a body in my hallway!”

“He is not dead. Merely unconscious. He will remain so for approximately three to four hours depending on his metabolic rate.” The man paused, and something that might have been curiosity flickered across his features. “Should I have killed him?”

“NO!”

“Noted. I will calibrate my response protocols accordingly.”

Wren lowered the knife slightly. Her arms were starting to shake from holding it up, and her whole body was beginning to follow suit as the adrenaline wore off and left behind a cold, hollow dread.

“Who are you?” she demanded. “How did you know someone was coming for me? How did you get here? Who sent you?”

The man’s brow furrowed - the first genuine expression she had seen on his face, though even it looked somehow mechanical, like someone had programmed “confusion” into a simulation and this was the result.

“I do not know,” he said.

“You do not know who sent you?”

“Correct.”

“Then how - why are you here?”

“That answer also escapes me.” He said this without apparent distress, as if the fact that he could not explain his own presence was merely an interesting data point rather than a cause for alarm.

Wren stared at him. He stared back. His eyes, she noticed, did not blink at normal intervals - too long between blinks, like he kept forgetting that blinking was something people were supposed to do.

“Let me understand this,” she said slowly, her voice pitched somewhere between hysteria and the particular brand of sarcasm she deployed when reality stopped making sense. “You broke down my door, knocked out a potential assassin, and you have no idea who sent you or why you are here.”

“That is an accurate summary, yes.”

“That is insane.”

“Possibly.” He seemed to genuinely consider this. “But I know one thing with certainty.”

“And what is that?”

He looked at her then - really looked at her, those grey eyes finding hers and holding them with an intensity that made her want to step backward and keep stepping until she hit a wall. “You must be protected,” he said. “I do not know why. I do not know from what. But I know that I must ensure your safety. It is the only thing I am certain of - the only directive that feels real.”

The knife finally lowered to Wren’s side.

She should call the police. She should scream for help. She should do something other than stand here in her dead sister’s hoodie, staring at a stranger who had just saved her life and could not explain why.

But the police had called Lark’s death a suicide. The police had not believed Wren when she said something was wrong. And this man - this strange, expressionless, completely insane man - had just knocked out someone who had clearly intended to hurt her.

YOUR SISTER KNEW TOO MUCH. SO DO YOU.

“The man on the floor,” Wren said. “Who is he?”

“I do not have that information.”

“But you knew he was coming for me.”

“I knew someone was coming. I did not know who. Only that you were in danger.”

“How? How did you know?”

The man was silent for a moment that stretched longer than it should have. “I cannot give you an answer that will satisfy you,” he finally said. “Only that I knew. The same way I know my own designation.”

“Your designation?”

“I am called Corvus.” He said it like someone reciting a serial number, flat and precise. “Corvus Jay. You may call me either.”

“Corvus,” Wren repeated. The word felt strange on her tongue, heavy with meaning she could not quite grasp. “That is a ridiculous name.”

“I am aware.”

She almost laughed - the sound caught in her throat and came out as something closer to a sob, which was embarrassing but also probably forgivable given the circumstances. Twenty minutes ago, she had been sitting in the dark, hunting bugs and trying not to think about her dead sister. Now there was an unconscious assassin in her hallway and a man named after a bird standing in her apartment, claiming he had to protect her without knowing why.

The smart fridge chose this moment to interject. “Your heart rate has increased by 147 percent,” it announced helpfully. “I recommend deep breathing exercises and perhaps a glass of warm milk.”

Corvus turned to look at the fridge. His expression shifted - the faintest crack of surprise appearing in that marble facade. “Your appliance speaks.”

“It does more than speak. It judges.”

“Interesting.”

“That is one word for it.”

They stood there in the wreckage of her apartment door, the two of them, with an unconscious assassin behind them and a judgmental fridge humming its disapproval, and Wren thought that this must be what it felt like when your life went completely off the rails.

Except her life had gone off the rails six months ago, when Lark died. This was just the moment she finally noticed the wreckage.

“You should sit down,” Corvus said. “Your physiological responses indicate you are experiencing shock. You require rest and possibly hydration.”

“I do not need you to tell me what I need.”

“Nevertheless, you require it.”

Wren wanted to argue. She wanted to throw him out, lock what remained of her door, call the police, and pretend none of this had ever happened. She wanted to go back to her code, her cold coffee, her small city of noodle cups, her grief that was at least familiar and did not come with unexpected strangers breaking down doors.

Instead, she found herself saying: “Who was my sister working for?”

Corvus tilted his head again - that same precise angle, like his neck had been calibrated to move in specific increments. “I do not have that information.”

“Do you have any information?”

“I have your name. I have my directive to protect you. I have the knowledge that threats exist.” He paused, and something shifted in his expression - not quite emotion, but the shadow of something that might become emotion given time. “And I have a strong sense that we have met before. Though I cannot explain why or when.”

Cold crawled down Wren’s spine, slow and deliberate.

“We have never met,” she said.

“I am aware. And yet.” His grey eyes found hers again, and there was something in them now - something searching, something almost human. “You are familiar to me, Wren Tanager. Your face. Your voice. You are familiar in a way that I cannot explain and that troubles me deeply.”

The apartment was very quiet. Even the fridge had stopped humming, as if it too was waiting for something.

“I think,” Wren said slowly, “that you need to explain exactly what is going on. From the beginning.”

“I would,” Corvus said, “if I knew where the beginning was.”

Outside, the hover-trains passed with their mechanical precision. Inside, the blue light of the laptop painted shadows across the walls that shifted and reformed like thoughts trying to take shape. Wren stood in her dead sister’s hoodie, holding a knife she did not know how to use, facing a stranger who had saved her life and could not remember why.

She did not know it yet - could not know it yet - but the man standing in her apartment, the man who called himself Corvus Jay, the man who did not know why he had to protect her or who had sent him or what any of this meant, had killed her sister six months ago. And now, through some twist of fate or programming or divine intervention that she would spend months trying to understand, he was here to save her.

The first thread of connection pulled taut between them, invisible and inevitable.

Whatever came next, whatever truths waited to be uncovered, whatever pain lay ahead - it would all begin here, in this moment, with a broken door and a judgmental fridge and two people who did not yet understand what they would become to each other.

Wren Tanager had stopped living six months ago.

Tonight, whether she wanted it or not, she was about to start again.