Boom.
In the late Era of Chaos, ten years before the Radiant Epoch, the last autumn night, a foreigner encountered a demon girl named Yage Sylvia for the first time. There were only eight hours left before autumn ended and the cold winter arrived; it was still ten years until the chaos ends and the Radiance descends.
...
The final autumn night of the Era of Chaos.
The fireplace radiated a warm white glow. A thin mist faintly cast the dim moonlight, and hoarfrost in snowy white grew on the window mullions, gradually shimmering with silvery ripples. Dew hung low on the pine and cypress trees outside the wooden window. Beyond that, there were no superfluous sounds in the world.
"Go close the window. It's windy."
An Su felt a gentle push on his back. It was cold outside, and warm in the bed; therefore, he did not want to get up and stayed stubbornly under the covers. He turned to the girl beside him and shook his head, "I won't go."