Airy Blue ni Nemure

Yui and Aya have been childhood friends since before they could remember.
Even when they became high school students, they were still by each other's side every day,
The world changes completely the day Yui's grandmother passes away.
Her hair color changes, and a mysterious phenomenon occurs every time she becomes emotional.
Her abilities that others cannot have begin to blossom, and Yui is no longer normal.

A mysterious trilogy themed around the witches of Flowers, Memories, and Sea.