Hotaru Tsukiori, a senior girl in high school, heard strange singing from afar on a sunny afternoon.
After repeated attempts, she plucked up the courage and decided to find the source of the sound.
However, when she followed the sound and searched, the end of the sound turned out to be the Zhibei College she dreamed of getting admitted to. She searched to no avail. Just when she was about to leave this place, she seemed to open the door to a different world. Here, there are the flying Yu tribe, the long-eared elves, various spirits...
Who is she? Why can she cross the boundary between this world and another world? Are there other spirits in this world?
Tsukiori Hotaru: This world seems completely different from what I imagined...
Purpose: Believe that life will be more beautiful