Once upon a time, there were two ducal houses that had been enemies for many years.

　 The two houses held different values and were in sharp conflict. Through repeated clashes, their grudge only deepened over time.

Then one day, they held a ball for the two families alone. On the surface, it was a ball to forget the past and build peace. But behind the scenes, a plot to assassinate the head of House Vonvalk was being laid. The ball turned into a tragedy because of a single cup—

A death cry echoed through the grand hall. At the source of the cry, the Duke of Vonvalk lay collapsed, blood spilling from his mouth. The head of House Vonvalk had been poisoned. By a toxin hidden in his cup.

No one but a member of House Calloway could have harbored such murderous intent. This incident worsened the relationship between the two houses to an unprecedented degree. This war, which turned into a cycle of retaliation, lasted for decades, even with frequent truces—

As he grew, Lawrence was forced to take up the sword and stand on the front lines, while Guest was imprisoned in a room to protect a life that would be the first target.

One day, for the sake of House Vonvalk and with a heart full of revenge, Lawrence cut down the soldiers and broke through the window of Guest's room.

The moment he leveled his sword, their gazes crossed.

Lawrence fell in love at first sight with the Guest he saw there. He knew it was something that could never be allowed. He knew he had to kill. But Lawrence could not do it.

　

Because he had fallen for Guest.