The Mermaid Prince As A Substitute Bride

Twenty-five years ago, the continent had five kingdoms, and they were all afraid of each other.

Now it had one.

The Great War lasted nine winters. When it ended, Aurelion stood alone. It had the strongest army ever raised, the finest academy, and a throne that called itself an empire. The lesser crowns learned to kneel. Those that did not were absorbed, broken, or forgotten.

The fifth kingdom did not get the chance to kneel.

Nerathis, the kingdom of the mermaids, was erased in a single night. Its coral palaces, its singing towers, and its royal line were gone by morning. The sea gave back nothing but drifting silver scales and a silence that fishermen still refused to sail through.

But rumors outlived the kingdom.

Sailors spoke of lights beneath the Thalassar Sea, deep in the northern waters, where no ship ever came back. They spoke of currents that turned against the wind, and of songs that rose at midnight from an empty ocean. Some said Nerathis was not dead, only hidden, sealed beneath the waves by a magic so ancient that not even Aurelion’s war mages could break it.

Aurelion believed the rumors. It had always believed them.

Mermaids were not ordinary creatures. Their royal blood could bend the ocean to its will. It could heal diseases no physician could name, and it could produce children whose gifts belonged to no other bloodline. For centuries, Aurelion’s kings had hunted that blood through archives, battlefields, and secret laboratories.

They were not hunting out of greed alone. They were hunting because of a prophecy.

‘The child born of the blood of the sea and the crown of the land will inherit the power to rule both worlds.’

Every emperor of Aurelion had heard those words before he learned to read. And every emperor had promised himself that the child would be his.

Veyra was the smallest of the kingdoms that survived.

It was a narrow ribbon of coast—salt flats, fishing villages, and stubborn orchards that clung to cliffs the wind wanted back. It had no great army and no gold mines. What it had was a harbor deep enough for warships, a mountain pass that opened straight into Aurelion’s southern border, and the misfortune of having stood on the wrong side in the war.

Veyra had fought beside Nerathis. When the mermaid kingdom fell, Veyra was left with a choice between burning and bending.

King Edric’s father chose to bend. The Treaty of Ashmere gave Aurelion the harbor, a tax on every ship that passed through Veyran waters, and a promise that no Veyran soldier would ever again be raised without the emperor’s blessing. In return, Veyra was allowed to exist.

Treaties like that were never signed once. They were renewed, and every renewal cost something more.

Twenty-five years after the war, Aurelion no longer wanted only harbors and taxes. The dying emperor needed his son married before winter, and the council wanted that marriage to bind the last free coastal kingdom to the throne in blood as well as in ink. The demand came in a letter sealed with black wax and worded like a courtesy.

‘The Crown Prince of Aurelion requests the hand of Princess Elara of Veyra.’

Nobody in Veyra mistook it for a request.

The throne room of Veyra’s royal palace smelled of sea salt and cold candle smoke. It was the only room that still tried to look grand. Faded banners hung from the rafters, and the marble floor showed its age in pale, worn hollows.

King Edric stood in the middle of it, shouting.

“Missing?” His voice cracked against the vaulted ceiling. “What do you mean, ‘missing’?”

The captain of the palace guard kept his eyes on the floor. “Her chambers were empty this morning, Your Majesty. The window was open. There was a rope. We found her cloak on the road east, but…”

“The wedding is in eleven days!” The king dragged both hands through his greying hair. He had aged ten years since the black-sealed letter arrived, and today he looked like he’d aged ten more. “Eleven days! The Aurelion envoy arrives at dawn to escort her to the capital. What am I supposed to tell him? That the princess simply wandered off?”

“Father, please.” Prince Darius stood at his side, pale and tight-jawed. “We will send riders. We will search every village.”

“With what riders? With what time?” Edric spun on him. “Do you understand what happens if we deliver no bride? Aurelion will call it an insult. An insult becomes a broken treaty. A broken treaty becomes an army at our border, and we have no army! We have farmers with pitchforks and a harbor they already own!”

Nobody spoke. Somewhere outside, the sea hammered at the cliffs.

“Veyra will be destroyed,” the king whispered. “Everything my father gave up his pride to save. Because of one foolish girl and a rope out of a window.”

“Is there no one else?” one of the old ministers asked carefully. “A cousin? A noble daughter of suitable age?”

“Lady Marisse is betrothed and has been for two years. Lady Corwin is thirteen.” Edric laughed, and it was a terrible sound. “And who would volunteer? Who would step forward to be sent across the border as a bride to the Crown Prince of Aurelion, a man they call the Butcher of…”

“I will.”

The voice was quiet, but the room heard it anyway.

Heads turned. In the shadow of the far pillar, half-hidden behind a row of ministers, a young man stepped forward.

Caelan Veyr was twenty-one, thin in the way of someone who had spent most of his childhood in bed. His face was pale, his dark hair fell untidily across his brow, and a heavy coat hung off his shoulders as though it were borrowed. Everyone in the palace knew him as the third prince, the illegitimate one, the sickly bastard the late queen had never forgiven and the king had never quite acknowledged. He was the sort of person the court’s eyes slid over.

They were not sliding now.

“What did you say?” the king asked.

“I said I will go.” Caelan met his gaze without flinching. “I will take the princess’s place.”

The silence lasted one heartbeat, and then the throne room erupted.

“Absurd!”

“He’s a ‘man’!”

“Your Majesty, this is madness, the boy is not well in his head…”

“Enough!” Edric’s voice cut through them all. He stared at Caelan as though a chair had begun to speak. “Caelan. You are a man. The Crown Prince of Aurelion has asked for a bride.”

“He has asked for Veyra’s princess.” Caelan’s voice stayed calm, though his hands had curled inside his sleeves. “He has never seen her. No one in Aurelion has. Her portrait was painted from a sketch, and it was painted badly. The envoy will arrive at dawn and expect a veiled bride. Aurelion weddings require the bride’s face covered until the vows are spoken.”

Darius stared at him. “You have thought about this.”

“I have had all night to think about it.” Caelan looked back at the king. “Your Majesty, you have two choices. You can admit the princess is gone and give Aurelion its reason for war. Or you can send a bride to the altar and buy Veyra time to find her.”

“And when they discover what you are?” Edric’s voice had gone low and rough. “When the prince lifts the veil and finds a ‘man’, they will not just declare war. They will hang every one of us in the harbor.”

“Then I will make sure they do not discover it.”

“You cannot promise that.”

“No,” Caelan said. “But I can promise that if it fails, the blame falls on me and no one else. The bastard prince acted alone, in secret, against your orders. You never knew.” His mouth curved, thin and humorless. “Nobody will find that hard to believe. Nobody at court expects anything better of me.”

The ministers fell quiet. It was an ugly argument, and it was a good one.

King Edric looked at the young man he had spent twenty-one years avoiding, and for the first time he seemed to actually see him. Beneath the frailty there was something hard and steady.

“Why?” the king asked at last. “Why would you do this?”

Caelan’s gaze dropped, only for a moment. “Because Veyra is the only home I have,” he said. “And I would rather wear a veil than watch it burn.”

It was true. It was not the whole truth. But the king was too desperate to notice the difference.

Edric closed his eyes. When he opened them, he looked ten years older again.

“Do it,” he said hoarsely. “Gods forgive me. Do it.”

The corridor behind the throne room was dark, its windows shuttered against the wind.

Caelan had made it almost to the stairs before a hand caught his sleeve.

“Have you lost your mind?”

Master Oren, royal physician of Veyra, was a stooped man in his sixties with ink-stained fingers and eyes that had seen too many deathbeds. He had treated Caelan through every fever, every collapse, every long night since the boy was small enough to be carried. He was not shouting, and somehow that was worse.

“You are going to walk into the heart of the Aurelion empire,” Oren said, “in a wedding gown. Married to the most dangerous man on the continent. Do you understand what you are throwing away?”

“I’m not throwing anything away.”

“Your life, Caelan!”

“Master Oren.” Caelan turned around. His face was tired, and his voice was gentle in a way that made the old man’s chest ache. “I know what I’m doing.”

“You do not.” Oren’s grip tightened. His voice shook. “Your father did not do what he did so that you could throw yourself into a lion’s mouth. Aldric gave up everything to keep you alive. Everything. He would never have wanted…”

“My father is dead.”

The words stopped the physician cold.

“He was murdered,” Caelan said softly. “In his own study. And whoever did it left me a royal seal from a kingdom that no longer exists, a letter telling me never to trust the Aurelion crown, and a map of the Imperial Royal Academy.” He drew a small, worn key on a cord from inside his collar and held it in his palm for a moment, then tucked it away again. “He knew something, Oren. He knew it well enough to be killed for it. And the letter says the answer is inside the academy’s archives.”

“Then let someone else…”

“There is no one else.” Caelan’s eyes lifted, dark and steady. “The academy admits only princes, heirs, and the families of the powerful. A bastard from a poor coastal kingdom would never get past the gate. But the husband of the Crown Prince?” He gave a small breath of a laugh. “The husband can go anywhere.”

Oren opened his mouth. Nothing came out.

He had helped Aldric once, long ago, in a candlelit room that neither of them ever spoke of. He knew better than anyone what the boy’s body was and what it could become. And he had carried the guilt of it for twenty years.

“You are a child,” the old man said, and his voice broke.

“I was a child,” Caelan agreed. “That’s why I have to finish this now, before someone finishes me.”

The wind rattled the shutters. Somewhere below, the sea kept hammering at the cliffs.

Oren looked at him for a long moment, and then let go of his sleeve.

“If you die in that place,” he said, barely audible, “I will never forgive myself.”

“Then I won’t die.” Caelan smiled, and for a moment he looked like the boy Oren remembered, feverish and bright-eyed and far too stubborn to be told no. “I’ll be very careful. I’ll be the most careful bride Aurelion has ever seen.”

He turned and walked down the dark stairs, one hand trailing the cold stone wall.

At the bottom, alone, he stopped.

His smile was gone. His hand had gone to the little key at his collar again, and it trembled.

‘Someone in that academy killed my father,’ he thought. ‘Someone in that academy is hunting me.’

Outside, far below, the sea rolled against the rocks, and for one strange moment Caelan could have sworn it was answering him.

He lifted his chin.

‘Whatever it takes,’ he swore silently, ‘I am getting into that academy. And I am going to find out who did this.’