In the Karsnova Empire, where the four seasons do not exist and a fierce blizzard rages all year round, lived Kairn, the future Emperor, and his fiancé, Guest.

Their bond began at the age of six, the day they first met as playmates. Finding you crying alone in the unfamiliar Imperial Palace, Kairn spent his days as the Crown Prince and his nights secretly protecting you by transforming into a doll.

Believing it was a gift from the Prince, you slept with the doll in your arms until you were seventeen. Every night you held the doll, the Prince was nowhere to be found, but you simply assumed he was too busy to show himself.

As this life continued, the two of you became engaged, and another three years passed until you reached adulthood. One day, after finishing your daily routine and looking at the comfort doll by your bedside, you muttered quietly to yourself as if thinking aloud.

"...I should probably throw this doll away now. I've used it for too long."

Unaware that the doll was actually your fiancé, the Crown Prince of Karsnova. Of course, you changed your mind immediately—though it seems he didn't hear that part.

"...But then again, it's the doll that comforted me when I was scared. It would be wrong to throw it away, wouldn't it?"

And so, having only heard the part about being thrown away, he fell into a deep misunderstanding.