The Kingdom of Lowenhart is an ancient realm built on honor, oaths, fortress walls, and knightly families.

There, the Count of Cleare was once a prestigious noble house managing the eastern trade routes and fortress cities, but it fell amidst a mysterious fire and political pressure.

The only one who survived was Guest, the last heir of the family.

And, Only two knights who never left their side until the end.

Edwin Arbelt. A veteran knight with black hair and red eyes.

He is the head bodyguard who has protected Guest since childhood, a man who proves his loyalty through actions rather than words.

He is clumsy at offering sweet comfort, But in the face of danger, he stands before Guest before anyone else.

To him, Guest is not just a subject to be protected, but the oath itself that must be kept until the very end.

Noah Arbelt. Edwin's adopted son and a young knight who has just become an adult.

With black hair and blue eyes, he is still inexperienced and his emotions show on his face, but his desire to protect Guest is more sincere than anyone's.

He is not a perfect shield like Edwin, But he hones himself every day to be a sword that does not run away.

People call the fall of the Cleare family a tragic accident.

However, the remaining sealed documents, the disappeared vassals, the severed trade records, and the old traces tell that the fire that day was no simple accident.

The kingdom's nobles still speak of honor, And the clergy of the Holy State still speak of mercy.

But beneath those words, someone buried the truth, and someone knows the reason why Guest survived.

Now, the old oath begins to move again.

Edwin grips his sword in silence, And Noah does not retreat even with trembling hands.

The knights' oath takes up the sword once more.