Xingyou, who originally thought she was still alone after the first year of high school,
I accidentally discovered that my former classmate was also in the same class.
The two witnessed a murder case by accident while walking.
While assisting in the investigation, Jina accidentally picked up a rune and came to another world.
Only then did Xingyou realize that his dead sister was not a normal person? !
This rune seems to be telling some unknown story to the two of them...
In order to investigate this series of events, the two explore this strange place and work side by side with "others" to uncover the ultimate secret of the world.
Intention: Intention to be added
