In countless dreams, she always feels like someone is calling her. When she wakes up, she always sheds a tear, but she always only remembers some fragments.
Until that day when I woke up, all these memories came to mind, and I stepped into a two-dimensional world. But as long as one year passed, I would travel to another ignorant world.
It wasn't until later that she realized that the truth about time travel was actually this...
Purpose: Recognize the facts