The male and female protagonists enter the dream world for unknown reasons and escape in the dream world. The people around the hero and heroine did not escape the nightmare, and being swallowed up by dreams became a terrifying component in people's nightmares. This also made the hero and heroine more confident in supporting each other to escape from the dream world.
Purpose: Human beings are inherently kind at first, but when it comes to life and death, few people can be truly kind...