The female protagonist's family conditions are average. Her father was a top student but he gave up on his studies due to family matters. The two of them lived a difficult life. On the other hand, the male protagonist's family conditions are very favorable and he has the air of a young man.
The background is in a world with only winter. Three years ago, the weather suddenly changed. Snow suddenly began to fall in summer, and the temperature dropped sharply. It continues to this day. The background of this world is closely related to the heroine. What is going on?
Concept: Love itself is an emotion that transcends the world.