On the night before high school began, Tsukushi had just finished work when she witnessed a mysterious girl, Yuno Yume, fall from an abandoned building.
The next day, Yuno appeared on the roof of the club building, completely unharmed, and seemed intent on jumping again. Tsukushi stopped her from doing something so dangerous, and the two gradually grew closer. Tsukushi's life as a loner began to change.
In the season when beautiful flowers bloom, girls chasing love, dreams, and hope cross paths. But as strange events keep occurring, after auditory hallucinations, alien technology, and mental breakdowns, Tsukushi feels her condition getting worse and worse. Then she sees...
A memory from long ago.
"Hey, let's run away from the 'Garden' together!"
That summer, when they were eighteen, the flowers bloomed beautifully.
The summer that would trouble Tsukushi had only just begun.
