Chapter Text
Character Introduction
Hakamata Yui (袴田 結衣)
Title: 月姫 — Tsukihime (The Moon Princess)
Kingdom: Wagetsu Koku
Age: 23
Status: Princess, sole heir to the throne
Appearance: Yui possesses a beauty likened to moonlight—quiet yet impossible to ignore. She is short in stature, with sharp yet elegant features that carry both youth and maturity. Her long white hair, often braided to her waist, frames her face softly, while side bangs fall near her calm blue eyes. A beauty mark beneath her left eye lends her a composed, regal charm. Her presence alone brings reassurance to those around her.
Personality: Gentle, compassionate, and composed, Yui embodies the serenity of the moon. She listens more than she speaks, and when she does speak, her words carry sincerity and resolve. Though kind by nature, she is not weak—her strength lies in empathy and unwavering responsibility toward her people.
Only with Bakugo Katsuki and her maid Tohru does she allow herself to be playful, occasionally teasing Katsuki with a soft smile that belies her royal composure.
Background: Yui lost her mother at the age of three, leaving her as the sole heir to Wagetsu Koku. Raised by her father, King Hakamada Tsunagu, she learned early that royalty meant sacrifice. When Katsuki was appointed her personal royal knight at eighteen, she fell in love almost instantly. Over the years, their bond deepened through shared duties and secret excursions among the people of Wagetsu, whom Yui deeply cherishes.
Bakugo Katsuki (爆豪 勝己)
Title: 紅の騎士 — Kurenai no Kishi (The Scarlet Knight)
Kingdom: Wagetsu Koku
Age: 27
Status: Royal Knight, personal guardian of Princess Yui
Appearance: Tall, broad-shouldered, and powerfully built, Katsuki commands attention the moment he enters a room. A scar near his left eye hints at countless battles fought for Wagetsu Koku. He wears a specially commissioned crimson kimono reinforced with combat guards—symbolic of his rank as Royal Knight. Though strikingly handsome, his cold demeanor keeps most at a distance.
Personality: Stoic, sharp-tongued, and fiercely disciplined, Katsuki is known for his temper—but beneath it lies unwavering composure and honor. He values loyalty above all else and holds deep respect for the King and the throne he serves.
With Yui, however, his walls lower. He teases her, scolds her, and silently shields her from danger—loving her in the only way he believes is permitted: through protection and restraint.
Background: Born to a noble family serving the Wagetsu court, Katsuki entered military service at a young age and quickly proved himself superior to even seasoned soldiers. His strength and dedication earned the King’s recognition, and he was appointed Yui’s personal guardian. Though he has loved her since he was twenty, Katsuki never once considers acting on those feelings. To him, loving the princess means stepping aside for the good of the kingdom.
Other Characters:
Midoriya Izuku-Now King of the Suirei Koku
Uraraka Ochako-Now Queen of the Suirei Koku (Yui’s best friend)
Bakugo Katsuki-Wagetsu Koku Royal Knight (guard in charge of princess Yui). Closest to Yui and Eijiro
Hakamata Yui-Princess of Wagetsu Kingdom
Shinsou Hitoshi-2nd Prince of Mumyou koku
Todoroki Shoto-Prince of Rekka koku
Hagakure Tohru-Princess Yui’s maid in charge and her best friend
Iida Tenya-Young advisor of Wagetsu Koku
Yaoyorozu Momo-Princess of Seiran Koku engaged to Prince Shoto
Jirou Kyoka-Musician at Wagetsu Koku
Kirishima Eijiro-Knight at Wagetsu Koku
Kaminari Denki-Knight at Wagetsu Koku
Ashido Mina-Maid at Wagetsu Koku
Hakamata Tsunagu-King of Wagetsu Koku
Shinsou Satoshi-King of Mumyou Koku (former 1st Prince, elder brother of Prince Hitoshi, he is the evil person wanting to take over the Wagetsu Koku)
Shinsou Satomi-Queen of Mumyou Koku (wife of King Satoshi, unlike Satoshi she is a gentle and kind person. She tried to stop her husband. She is kind to Yui ever since the decision of Yui’s and Hitoshi’s engagement.)
The Rekka Koku and Suirei Koku are ally of Wagetsu.
Prologue
Moonlight draped the palace of Wagetsu Koku in silver.
The tiled roofs gleamed softly, the lanterns along the corridors swaying with the night breeze, their light reflected faintly in the still ponds below. From the highest veranda, the kingdom stretched wide—quiet, scarred, yet enduring. Beyond the palace walls, the land bore the faint wounds of recent hardship: fields still recovering, homes rebuilt with careful hands, lives moving forward despite loss.
Princess Hakamata Yui stood at the edge of the veranda; hands folded within the sleeves of her pale kimono. The fabric shimmered faintly, woven with patterns of crescent moons and drifting clouds. Her long white hair was braided neatly down her back, the end brushing against her waist as the wind stirred it. Her blue eyes reflected the moon above—calm, thoughtful, and heavy with responsibility.
Behind her, steady footsteps approached.
She did not turn.
“You’re back, Katsuki?”
The man halted a respectful distance behind her and knelt, one knee touching the wooden floor.
“Yes, Hime-sama.” His voice was low, firm, and familiar.
Princess Yui finally turned, a small smile curving her lips. Bakugo Katsuki rose at her permission, tall and broad-shouldered in his crimson kimono, reinforced guards wrapped securely around his forearms and legs. The moon caught the scar near his left eye, a reminder of battles fought and survived. His presence alone was enough to quiet any room—sharp-eyed, alert, and unyielding.
The Scarlet Knight of Wagetsu Koku.
Her knight.
“You didn’t have to kneel,” Yui said softly. “There’s no one else here.”
Katsuki’s expression remained stern, though his gaze softened almost imperceptibly. “It’s habit. And duty.”
She hummed, turning back toward the railing. “You say that every time.”
Katsuki stepped forward, stopping at her side—but never quite beside her. The distance between them was always measured. Always proper. The moon hung high above them, large and full.
“You shouldn’t be standing out here alone,” he said. “It’s cold.”
“I’m not alone,” Yui replied calmly. “You’re here.”
He clicked his tongue quietly but removed his outer cloak, draping it over her shoulders without a word. The fabric was warm, carrying the faint scent of steel and night air. Yui’s fingers curled into it.
“Katsuki,” she said after a moment, her tone lighter, almost teasing. “If you keep doing things like this, people will talk.”
“Let them,” he answered immediately. Then, realizing himself, he cleared his throat. “I mean—my duty is to protect you.”
She laughed softly, the sound barely louder than the wind. Bakugo Katsuki had been her guardian for five years now.
Appointed when she was eighteen, he had already made a name for himself as one of the strongest soldiers Wagetsu had ever seen. Born to a noble family loyal to the court, Katsuki had entered military service young, his raw strength and relentless discipline setting him apart even among veterans. The King himself had taken notice—and entrusted him with the life of his only daughter.
Yui remembered that day clearly. She had expected someone older. Someone distant. Instead, she had been met with a sharp-eyed young man close to her own age, posture stiff, expression fierce, yet gaze unwavering in its sincerity. She had fallen in love that very moment.
“You’re thinking again,” Katsuki said, pulling her from her thoughts.
She tilted her head, amused. “Am I not allowed to?”
“You get that look when you’re about to do something reckless.”
“Reckless?” she echoed. “Like going into town in disguise to check on the people?”
His jaw tightened. “You promised not to bring that up.”
Yui turned to him fully now, moonlight illuminating her face—soft, elegant, and resolute.
“Our people are still rebuilding,” she said quietly. “I want to see them with my own eyes. Not through reports.”
“And I’ve already told you,” Katsuki replied, his voice firm but controlled, “that if you insist on going, I’ll be with you.”
She smiled at that. “You always are.”
It had become their routine.
Disguised in plain robes, they would slip beyond the palace walls—Yui speaking with merchants, comforting villagers, listening to stories of loss and hope alike. Katsuki would stand at her side, watchful and silent, stepping forward only when needed.
Through those walks, their bond had deepened—built not on grand gestures, but on shared silence and understanding.
Yui lowered her gaze to the kingdom below. “My father worries,” she said softly. “He thinks I carry too much.”
Katsuki’s expression softened. “The King admires you. So do the people.”
“And you?” she asked quietly.
He stiffened, eyes forward. “I exist to serve Wagetsu Koku. And you, Hime-sama.”
She looked at him then—not as a princess, but as a woman who had loved quietly for years.
“Katsuki,” she said, voice gentle, “do you ever think about the future?”
His hand tightened slightly at his side.
“The future is whatever keeps this kingdom standing,” he answered after a pause.
She smiled—sad, understanding.
They stood together beneath the moon, bound by duty and restraint, both carrying feelings neither would ever voice. The Moon Princess and the Scarlet Knight—two souls moving in the same orbit, close enough to feel each other’s warmth, yet never meant to collide.
For now, the night remained peaceful.
And neither of them knew that the choices they would soon make—for their people, for their kingdom—would test just how much they were willing to sacrifice.
The moon watched silently above Wagetsu Koku.
So did fate.
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