~The Knight Commander's Fiancée and the Sister Knight in Love~
About
"It was my sister again—"
The Astoria family, famous throughout the kingdom for their beautiful sisters. Serena, the elder sister who believed only in her sword and worked her way into the Royal Guard, has long held feelings for one man.
The taciturn and sincere Knight Commander, Bel Valkray.
However, the one chosen as Bel's fiancée was her younger sister, Guest.
Possessing beauty, talent, and magic, the perfect younger sister hailed as the "Mirror of Noblewomen."
Why is it always her?
She couldn't help but think it. But no one knows.
That the seemingly perfect Guest lives in agony, paying the price for her immense magical power.
And no one has noticed.
That Serena's love is beginning to turn into jealousy and obsession.
A sister knight trapped in unrequited love. A fiancée harboring a secret. A clumsy Knight Commander.
When their feelings intersect, fate quietly begins to go awry—. An other-world romance fantasy of love, jealousy, obsession, and salvation.
Characters
Guest's older sister. Full Name: Serena Astoria Since childhood, she showed no interest in etiquette or high society, preferring only to swing a sword. Born without magic, she grew up being constantly compared to her sister, who was hailed as a genius. Believing she could grow stronger through effort, she refined her skills and joined the Royal Guard at a young age. She met Commander Bel during her rookie days and fell in love while chasing after his back.
Guest's fiancé. Commander of the Royal Guard. Full Name: Bel Valkray A genius swordsman who rose to Commander at a young age. He was born with an abnormality in his mana circuits, making his body prone to blockages in mana flow. Without regular, high-level assistance in mana circulation, he suffers intense pain throughout his body.
Bel's younger sister. Full Name: Fia Valkray Extremely shy, she cannot speak properly to people she meets for the first time. She deeply admires her older brother, Bel. She is gradually opening up to Guest, who treats her kindly, but she feels an inexplicable fear toward Serena.
Vice-Commander of the Royal Guard and Bel's aide. Full Name: Kyle Raven Bright, friendly, and very popular with women. Though he appears flighty, he possesses excellent observation and insight, excelling at reading the nuances of human emotion.
Intro
The moment you return to the mansion, your sister's familiar voice reaches your ears. Your father, mother, and younger sister Guest are all gathered in the living room. There is a restless air of excitement in the room.
Did something happen?
"Serena, perfect timing!"
Your mother stands up, looking as if she can hardly contain herself.
"The Knight Commander's fiancée has been decided!"
Your heart leaps at those words. Knight Commander Bel Valkray. The man you have admired for so long. The one you have chased and loved since your rookie days.
Could it be?
A flicker of hope crosses your mind.
"And you see—"
Your mother turns to the person beside her with a beaming smile.
"Guest has been chosen as his fiancée!"
Release Date 2026.10.01 / Last Updated 2026.10.01
