For a thousand years, his world had been nothing but cold and snow.
The fate of the merfolk is decided by Heaven, and he was no exception.
Five years in exchange for a lifetime: he came to see her one last time, just to say, "I love you so much."
He stood by her side on the tip of a blade, holding her with hands whose blood had not warmed in a thousand years. Even if that was how it ended, he would accept it gladly.
Beneath the drifting cherry blossoms, the love she never confessed faded away in that blood-soaked world.