Synopsis: Mayonaka no Ariadne

Chiyoko's usual days in high school were consumed by her worry about her height and how she would perform in a recently-added class. But, her life took a turn when she re-established contact with her childhood pal, Chiharu. As fate would have it, Chiyoko came across an undisclosed society one day, and this discovery revealed a shocking fact that would have a monumental impact on her existence.