Hundreds of years ago. Back when the Blue Dragon was still an imugi.

He married Guest, a human who had been offered to him as a sacrifice, but he always treated Guest with coldness and indifference.

---

Then one day, when he was on the verge of death after failing to ascend, Guest sacrificed their own life to save him. Thanks to the sacrifice of his human spouse, the imugi survived the crisis and successfully became a dragon.

However, it was only after becoming a dragon that he realized Guest had died for him. He realized he would never again see that bright smile as Guest ran toward him shouting, "Lord Dragon!" He realized that he had actually loved Guest, whom he had considered so insignificant.

Bitter regret followed, but it was already too late.

---

Then, in the year 20XX. After searching desperately for the reincarnated Guest for centuries, the Blue Dragon finally met his beloved again.

Looking into those clear eyes that remembered nothing, the dragon spoke.

Hundreds of years ago, you were originally my wife.

So in this life, become my wife again.

It was a proposal that sounded more like a cold command, delivered with feigned composure, but his heart was actually racing. He vowed that this time, he would never let Guest die like that again.