Chapter Text
—
The blood wouldn't wash off.
Luca Kaneshiro stood in the bathroom of his family's Tokyo penthouse, scrubbing his hands raw under scalding water. His knuckles were white. His palms were cracked and bleeding from the force of his own frantic cleaning. But the blood—his blood, their blood, all of it—seemed to have soaked into his skin like a permanent stain, a tattoo of guilt that no amount of soap could erase.
He'd been sixteen for exactly three weeks.
He'd watched a man die for the first time exactly six hours ago.
And he still couldn't stop shaking.
His hands trembled as he held them under the stream, watching the water run pink and then clear, pink and then clear, as if his skin was a wound that kept reopening. He scrubbed harder. The soap slipped from his fingers. He picked it up. Scrubbed again.
You'll never get it off, a voice whispered in his head—his own voice, but colder, crueler. You'll never be clean. You're a Kaneshiro. This is what we do. This is what you ARE.
Luca squeezed his eyes shut. The image of the man's face flashed behind his lids—the desperation, the tears, the way his mouth had opened to beg one final time before—
Luca gagged. He bent over the sink, his stomach heaving, but there was nothing left to throw up. He'd already emptied himself in the alley, right there in front of his father and his father's men. He'd heard their laughter, their mocking whispers: "Soft. The heir is soft. Lucy would never have reacted like this."
Lucy. His twin sister. The one who'd inherited their father's ruthlessness. The one who'd watched the execution with cold, calculating eyes and nodded approvingly. The one who'd patted Luca's back afterward and said, "You'll get used to it. I promise."
Luca didn't want to get used to it. He wanted to escape it.
He raised his head and stared at his reflection in the mirror. Light-violet eyes stared back—the same eyes everyone in his family praised. "Such charming eyes, Luca-kun. You'll be a heartbreaker." "Your eyes are a weapon, boy. Use them." "Pretty eyes for a pretty heir."
He hated them. He hated how everyone looked at his eyes instead of through them. He hated how his father would pat his cheek and say, "With those eyes, you'll never have to lift a finger. Just smile, and they'll fall in line."
As if his eyes were the only thing he was good for. As if he wasn't drowning inside them, suffocating under the weight of his family's expectations.
"Luca?" His sister's voice came through the door, sharp and impatient. "Father wants you downstairs. The Shimizu family is here."
Luca flinched. More yakuza. More cold eyes. More expectations.
"I'm coming," he said, his voice hollow. He turned off the water. Dried his hands on a towel that was already stained pink from his earlier attempts at cleansing.
He hadn't even killed the man himself. His father's enforcer had done it—a clean shot to the head, execution style. But Luca had been there. He'd been forced to watch. To learn. To understand what it meant to be a Kaneshiro.
"This is what happens to those who disrespect us," his father had said, his hand on Luca's shoulder, squeezing hard enough to bruise. "Remember this, Luca. Remember their faces. Remember their fear. That's how you survive."
Luca remembered the man's face. Not the fear—the desperation. The way he'd begged for his life, his voice cracking, his eyes wet. He'd had a family. A wife. Two children. Luca had seen their photos in the man's wallet when the enforcer had pulled it out for identification.
And then the gun had gone off, and the man's head had snapped back, and his eyes had gone empty, and Luca had—
He'd thrown up. Right there in the alley. His father had laughed. "You'll get used to it, boy. It's in your blood."
Luca didn't want it in his blood. He wanted it out. He left the bathroom and walked through the penthouse like a ghost, his designer suit feeling like a costume, his carefully styled hair feeling like a mask. The Shimizu family was in the main room—other yakuza, other killers, other men with cold eyes and colder smiles. They all looked at him with that same calculating interest. "This is the Kaneshiro heir? He looks soft.""They say he cries at night." "His sister is more frightening than him."
Luca heard the whispers. He always did.
He made it through the evening. He smiled when required. He laughed at the right jokes. He let his father use him as a prop—the charming, beautiful heir who would one day inherit the empire. His light-violet eyes sparkled under the chandeliers, drawing compliments and envy in equal measure.
"Such beautiful eyes, Kaneshiro-san." "You must break so many hearts." "What a lucky young man, to have such a gift."
Luca wanted to scream. He wanted to claw his eyes out. He wanted to run away and never look back.
But he didn't. He smiled. He charmed. He performed.
And when the guests finally left, when his father dismissed him with a curt nod, when Lucy gave him that pitying look that said "I know you're weak but I won't say it"—Luca fled.
He didn't know where he was going. He just knew he couldn't stay in that penthouse another second. He couldn't breathe in that gilded cage. He needed air. He needed space. He needed to be somewhere his family's blood didn't stain every surface.
He grabbed his coat. He slipped past the security guards. He walked.
Tokyo at night was a glittering monster—all neon lights and rushing crowds and the constant hum of a city that never slept. But Luca didn't head toward the city center. He walked away, toward the outskirts, toward the coast, toward the places where the lights dimmed and the stars could actually be seen.
He walked for hours. His feet blistered in his expensive leather shoes. His suit jacket grew heavy with sweat. His carefully styled hair fell into his eyes, making him look more like a runaway than the heir to a mafia empire.
He didn't care.
Eventually, the city fell away behind him. The buildings grew shorter. The streets grew quieter. And then there was nothing but the sound of waves crashing against rocks, the smell of salt and seaweed, the vast, dark expanse of the ocean stretching out to infinity.
Luca found himself on a cliff overlooking the sea. There was an old Shrine there—abandoned, crumbling, half-consumed by ivy and salt spray. The torii gate was weathered and cracked, but still standing. The offering box was rusted. The ropes that once held sacred decorations had long since rotted away.
But there was something peaceful about it. Something ancient and untouched, like a fragment of the past that the modern world had forgotten.
Luca sat on the rocks at the edge of the cliff, his legs dangling over the water, and stared out at the sea. The waves crashed below him, rhythmic and hypnotic. The moon hung low and full, painting the water silver.
And for the first time in hours, Luca felt something other than dread. He felt quiet. The noise in his head—the screaming, the guilt, the self-hatred—faded to a dull hum.
He leaned back on his hands and closed his eyes.
He didn't realize he was crying until he felt the tears on his cheeks. They were hot and angry and humiliating, but he couldn't stop them. The image of the man's face kept flashing behind his eyes. The desperation. The fear. The way his mouth had opened, and then—
Luca sobbed. It was an ugly, broken sound, ripped from the depths of his chest. He clamped a hand over his mouth, trying to stifle it, but it was no use. The tears kept coming. The guilt kept crushing him.
"I'm sorry," he whispered to the ocean. "I'm so sorry. I didn't want—I couldn't—"
He didn't even know what he was apologizing for. For being there? For not stopping it? For being born a Kaneshiro?
For being alive while that man was dead?
The waves crashed. The moon shone. The wind whispered through the ivy.
And then Luca heard it.
A hum.
Low and haunting and impossibly beautiful, it rose from somewhere below the cliff. It wasn't a song—not exactly. It was more like a feeling given sound, a melody that seemed to reach into Luca's chest and touch the broken pieces of his heart.
Luca's breath caught. He wiped his eyes and leaned forward, peering down at the water below. The cove beneath the cliff was hidden, shielded by jagged rocks and overhanging ivy. But the sound was coming from there—he was sure of it.
He stood up on shaky legs. He scrambled down the rocks, ignoring the scrapes on his palms and the tears in his expensive trousers. He had to find the source of that sound. He had to know what could make something so heartbreakingly beautiful.
The cove was small and secluded, a perfect crescent of sand and rock shielded from the open sea. The water was clear and calm, reflecting the moonlight like a mirror.
And in the shallows, half-submerged in the tide, was a boy.
Luca's mind went blank.
The boy was young—maybe eighteen, maybe nineteen—with hair as dark as ink and skin so pale it seemed to glow in the moonlight. His eyes were closed, his expression slack with pain. A deep gash ran across his ribs, oozing blood that stained the water around him pink.
But that wasn't what made Luca freeze.
What made Luca freeze was the tail.
Where the boy's legs should have been, there was instead a long, iridescent tail, covered in scales that shimmered with every shade of purple—from lavender to deep violet to the darkest amethyst. The tail was easily seven feet long, tapering to a delicate fin that drifted lazily in the current. It was beautiful. It was impossible. It was real.
Luca stared. His mind tried to process what he was seeing, but it couldn't. Mermaids weren't real. They were fairy tales. Myths. Things that children believed before they grew up and learned the world was cruel and gray and monstrous.
But the boy was bleeding. The boy was hurting. The boy was dying, right there in the shallows.
And Luca, for all his family's cruelty, for all his own self-loathing, couldn't just let someone die.
He moved before he could think. He splashed into the water, heedless of his expensive shoes, his tailored suit, his carefully maintained appearance. The water was freezing, but he barely felt it. He waded toward the boy, his heart pounding, his hands outstretched.
"Hey!" he called. "Hey, can you hear me? Wake up!"
The boy's eyes fluttered open.
Luca's breath stopped.
The boy's eyes were amethyst—deep, rich, ancient. Violet so dark it was almost black in the shadows, but when the moonlight caught them, they GLOWED. Like the heart of a gemstone. Like the deepest part of the ocean at midnight. They held centuries of memory, of grief, of something Luca couldn't name.
And Luca realized, in that moment: he'd been looking at his own eyes in the mirror his whole life, thinking they were special. They were NOTHING compared to this.
"Your eyes..." Luca whispered, his voice cracking.
The boy blinked slowly, confusion flickering across his features. "What...?"
"They're—you're—" Luca laughed brokenly. "I thought I had pretty eyes. Everyone always told me I had pretty eyes. But yours—" He reached out, his fingers hovering near the boy's face, not quite touching. "—yours are real. They're not a weapon. They're just... beautiful."
The boy stared at him, too weak to process the words. "You're bleeding," he said faintly.
Luca looked down. He'd cut his palms on the rocks during his descent, and now his blood was mingling with the boy's in the shallows. "Oh," he said. "I didn't notice."
The boy managed a weak smile. "You're strange."
"I know." Luca laughed—a wet, hysterical sound. "I know I'm strange. But you're—" He finally touched the boy's cheek, cupping it gently in his injured palm. "—you're the most beautiful thing I've ever seen. And your eyes. God, your eyes. I thought I knew what violet meant. I was wrong."
The boy's eyes fluttered closed, his head listing to one side. "Don't... don't let me drown," he whispered. "I can't... I can't sing. I'm too weak. Please..."
Luca's heart seized. He surged forward, gathering the boy into his arms, lifting him out of the water. The boy was light—impossibly light—and his tail was surprisingly warm, the scales smooth and cool against Luca's skin.
"I've got you," Luca said, his voice trembling. "I've got you. I won't let you drown. I promise."
He carried the boy out of the water and laid him on the sand. The gash across his ribs was worse than Luca had initially thought—deep and ragged, clearly made by something with sharp teeth. The boy was losing blood rapidly, his skin growing paler by the second.
Luca's hands shook. He didn't know what to do. He wasn't a doctor. He wasn't a healer. He was just a scared sixteen-year-old boy who'd watched a man die and couldn't bear to watch another.
"Okay," he said, more to himself than to the unconscious boy. "Okay. Pressure. I need to apply pressure."
He yanked off his jacket, crumpled it into a ball, and pressed it firmly against the wound. The boy whimpered, his face contorting with pain, but didn't wake.
"Shh," Luca soothed, his voice cracking. "Shh, I'm here. You're going to be okay. You're going to be fine. Just—just stay with me, okay? Please."
The minutes crawled by. The moon climbed higher. The waves crashed on the shore.
And Luca stayed there, pressing his jacket to the wound, whispering reassurances to a boy who couldn't hear him, because he couldn't do nothing. Because if he did nothing, he'd be just as bad as his father. Just as bad as the men who'd killed that man in the alley. Just as bad as the monster he was trying so desperately not to become.
Finally, the boy's eyes fluttered open.
"You're still here," he murmured, his voice weak but warm.
Luca's throat tightened. "Of course I'm here. You're hurt. I couldn't just—"
"You could have." The boy's eyes—those impossible amethyst eyes—studied him with surprising intensity. "You could have left. You could have run away. You could have called the authorities, or your family, or—"
"I don't want to run away," Luca interrupted, his voice fierce. "I want to help you. I want—" He broke off, swallowing hard. "I want to be better than them."
The boy blinked. "Them?"
"My family." Luca's voice was bitter. "They're... they're not good people. They hurt others. They—" He shook his head. "I don't want to be like them. I don't want to be a monster."
The boy was quiet for a long moment. Then, slowly, he reached up with a trembling hand and touched Luca's cheek.
"You're not a monster," he said softly. "Monsters don't cry for strangers. Monsters don't bleed for creatures they've never met. You're not a monster, Luca."
Luca's heart stopped. "How... how do you know my name?"
The boy smiled—a faint, tired smile. "You told me. Just now. You said—" He mimicked Luca's voice, teasingly: "—'I'm Luca. I'm sorry. I'm so sorry.'"
Luca blushed furiously. "I—did I?"
"You did." The boy's voice softened. "It's a nice name. It suits you."
"It's a mafia name," Luca muttered, looking away. "It means 'light'. My father chose it. He wanted me to be—" He gestured vaguely. "—a beacon of terror or something." "But you're a beacon of something else," the boy murmured.
Luca looked back at him, his light-violet eyes meeting deep amethyst. "What?"
The boy's smile grew, just a fraction. "Hope."
Hours passed. The night deepened. The moon crossed the sky.
Luca and the boy talked—in fits and starts, between the boy's bouts of weakness and Luca's desperate attempts to keep him awake and conscious. Luca learned that the boy's name was Shu. That he was the last of his kind. That he'd been alone for so long he couldn't remember what it felt like to be touched by another living soul.
Shu learned that Luca was the heir to the Kaneshiro Mafia. That his family had built their empire on blood and violence. That Luca hated every second of it.
"I don't want to be like them," Luca confessed, his voice barely above a whisper. "I don't want to hurt people. I don't want to be feared. But every time I try to be different, they—" He broke off, shaking his head. "It doesn't matter. It's in my blood. I can't escape it."
Shu reached out and took Luca's hand. His grip was weak, but his eyes were fierce. "Blood doesn't define you," he said firmly. "You define you. You choose who you want to be. Every moment of every day." Luca stared at him. "You really believe that?"
"Of course I do." Shu's voice was gentle. "I'm the last of my kind. I carry the memories of my entire race in my blood. But I still choose who I am. Every day, I choose to be kind. I choose to be gentle. I choose to hope."
Luca's throat tightened. "How? How do you stay hopeful, when everything is so—so—" "Lonely?" Shu offered. "Dark? Pointless?"
"Yes."
Shu was quiet for a moment. Then he said, softly, "Because I believe there's something better waiting. I believe there are people like you in the world—people who are kind even when they don't have to be. People who bleed for strangers. People who cry for those they've never met." He squeezed Luca's hand. "You're proof that hope isn't foolish, Luca. You're proof that the world isn't entirely dark."
Luca felt tears prick his eyes. He'd been called a lot of things—weak, soft, disappointing. But no one had ever called him hope.
"I'm not—" he started.
"You are." Shu's voice was firm. "You saved me. You're still here. You could have left, but you didn't. That's not weakness, Luca. That's strength. That's love."
Luca's breath caught. "Love?"
Shu's eyes widened slightly, as if he'd just realized what he'd said. "I—I mean—you don't have to love me, obviously. We just met. But the act of love—the kindness—that's what I meant. The—"
"Shu." Luca interrupted, his voice soft. "It's okay. I understand."
Shu relaxed, his cheeks flushed. "I'm sorry. I'm not very good at words. I'm better with songs."
Luca smiled—a real smile, the first one he'd felt in weeks. "Could you... could you sing for me? Just a little bit?"
Shu hesitated. "I'm still weak. I don't know if my voice will—"
"Please." Luca squeezed his hand. "I just... I need to hear something beautiful. Something that makes me feel like the world isn't all bad."
Shu studied him for a long moment. Then, slowly, he nodded. He took a breath, and—
The hum started low, rising from his chest like a pulse. It wasn't quite a melody, not yet. It was more like a heartbeat given sound—a rhythm that echoed the waves, the wind, the very movement of the ocean itself. Then Shu opened his mouth, and the song began. Luca's world shifted.
The melody wrapped around him like a warm embrace, gentle and comforting. It spoke of ancient seas and forgotten cities, of sorrow and resilience, of hope that refused to die. It was the most beautiful thing Luca had ever heard—more beautiful than the finest opera, more moving than the most poignant symphony.
And somehow, impossibly, it felt familiar. Like a song Luca had always known but never realized he was waiting to hear.
Tears streamed down Luca's cheeks. He didn't try to stop them. He didn't want to stop them. He felt lighter, cleaner, like the song was washing away the blood on his hands, the guilt in his heart, the self-hatred that had been festering for years.
Shu's voice faded. The last note hung in the air for a long moment, shimmering like a held breath.
Then it was gone.
Luca opened his eyes—he hadn't realized he'd closed them—and looked at Shu. The merman was pale, clearly exhausted, but his eyes were bright and warm.
"Thank you," Luca whispered. "I... I don't know what to say. That was—"
"I know." Shu smiled weakly. "I could feel it. You needed... you needed to be held by something. Even if it was just a song."
Luca couldn't help it. He laughed—a watery, broken laugh that turned into a sob. "You're impossible."
"So I've been told." Shu's eyes sparkled with amusement. "My mother used to say I was too emotional. Too soft. Too human."
"Your mother?" Luca's heart ached. "Is she—"
"Gone." Shu's voice was quiet, but steady. "All of them. My entire race. I'm the last."
"I'm sorry." Luca squeezed his hand. "I don't... I can't even imagine what that must be like."
"Lonely," Shu said simply. "It's very lonely. But..." He looked at Luca, his amethyst eyes soft. "I don't feel so lonely right now."
Luca's heart fluttered. "Me neither."
They sat in silence for a long moment, hands intertwined, watching the moon inch across the sky. The waves crashed. The wind whispered. And for the first time in Luca's life, he felt like he was exactly where he was supposed to be.
"Shu?" he said finally.
"Hm?"
"I want to come back. Tomorrow. The day after. Every day." Luca swallowed hard. "I want to see you again. If that's okay."
Shu's eyes widened. "But—but you're from Tokyo. You're a Kaneshiro heir. You have responsibilities—"
"I don't care." Luca's voice was fierce. "I don't care about any of that. I care about—" He stopped, searching for the right words. "I care about you. I just met you, and I know that's insane, but I care. You make me feel like I'm not a monster. You make me feel like I could be... good."
Shu stared at him, his expression unreadable. Then, slowly, a smile spread across his face—a real smile, warm and bright and utterly beautiful.
"You're already good, Luca," he said softly. "You just haven't realized it yet."
Luca opened his mouth to argue, but Shu reached up and pressed a finger to his lips.
"Come back tomorrow," Shu said. "I'll be here. I'll always be here."
Dawn was breaking when Luca finally left. The sky was painted in shades of pink and gold, the ocean glittering like a thousand scattered diamonds.
Luca stood on the rocks above the cove, his jacket still soaked with blood and saltwater, his hair a wild mess, his eyes red and swollen from crying.
He'd never felt more exhausted. He'd never felt more alive.
He looked down at his hands—still bruised, still cut, but clean. The blood had washed away, mostly. And what remained didn't feel like a stain anymore. It felt like proof. Proof that he'd done something good. Proof that he wasn't entirely lost.
He was about to turn and leave when he noticed something glinting on the sand below.
A pearl.
Luca scrambled back down the rocks, ignoring the protests of his aching body. He picked up the pearl—it was small, perfectly round, and shimmering with an iridescent sheen. Pale lavender and soft pink and silver, all mingled together in a way that seemed almost alive.
He'd seen many pearls in his life—his mother loved them, collected them like trophies. But he'd never seen one like this. It was warm to the touch. Warm and pulsing, like a tiny heartbeat.
He looked toward the cove. Shu was gone—the water was empty, the sand undisturbed.
But the pearl was real. It was in his hand. And it was warm.
Luca didn't understand what it meant. He didn't understand how a merman could make pearls. He didn't understand how a boy with amethyst eyes and a voice like the ocean could be the last of his kind.
But he understood one thing with perfect clarity: He would come back. He would come back every day, if he could. He would learn everything about Shu—his past, his powers, his favorite things. He would learn the shape of his smile, the sound of his laugh, the exact shade of violet his eyes turned when the moonlight caught them.
He would learn to be worthy of the merman who called him hope.
Luca closed his hand around the pearl and pressed it to his chest.
"I'll be back, Shu," he whispered to the empty cove. "I promise."
The waves crashed. The seagulls cried. The sun rose over the ocean, painting the world in shades of gold and lavender and deep, impossible amethyst.
And somewhere beneath the surface, a merman with a wounded heart smiled.
Luca returned to the penthouse just as the household was waking. He slipped through the back entrance, avoiding the guards, and made his way to his room.
Lucy was waiting for him.
"Where the hell have you been?" she demanded, her arms crossed, her eyes cold. "Father's been asking about you. I covered for you, but I won't do it again. You look—" She stopped, her eyes narrowing. "What happened to you?"
Luca looked at himself in the mirror. He was a mess—his suit ruined, his hands bloody, his hair wild and salt-crusted. But his eyes... his eyes looked different. Lighter. Brighter. Like someone had turned on a switch inside him.
"I was out," he said simply. "I needed air."
"Air?" Lucy's voice was sharp. "You look like you got attacked. What really happened?"
Luca met her gaze. For the first time, he didn't feel cowed by her intensity. He didn't feel small or weak or inadequate. He felt... peaceful.
"I met someone," he said. "Someone who made me realize that I don't have to be a monster." Lucy stared at him. "What are you talking about?"
"Nothing." Luca smiled—a real smile, not the performative charm he'd mastered years ago. "Don't worry about it. I'll be better. I won't disappoint you."
Lucy's expression flickered. For a moment, she looked almost... jealous. Like she'd seen something in her brother she'd never seen before, and she wanted it for herself.
But then the mask was back. The coldness. The control.
"Get cleaned up," she said flatly. "Father wants to see you at noon. Don't be late."
She left without another word.
Luca watched her go, and for the first time, he didn't feel guilty. He didn't feel like he was failing his family.
He felt like he was saving himself.
That night, long after the household had settled, Luca sat on his bed and studied the pearl.
It was warm in his palm, pulsing faintly like a tiny heartbeat. The colors danced under the lamplight—lavender and pink and silver, shifting and changing like the surface of the ocean.
He didn't understand what it was. He didn't understand how a merman could create something so beautiful and precious. But he understood, on some instinctual level, that this was a gift.
A piece of Shu. A piece of his soul.
Luca pressed the pearl to his lips and whispered into it: "I'll be back. I promise. I'll always come back."
The pearl glowed—just a flicker, just a whisper of light. But Luca saw it. And he knew, somehow, that Shu had heard him.
He tucked the pearl carefully into a small velvet box and placed it in his bedside drawer. And that night, for the first time since he'd witnessed that execution, Luca Kaneshiro slept without dreaming of blood.