They used to be sisters who were inseparable from life to death under the butterfly feather tree. Why did it happen that when they met again, it was already another scene of great changes.
Purple butterfly feathers and flowers are flying like rain. How many secrets are there in the snow city?
The boy in white appears leisurely, and the mysterious girl falls from the sky. Is it coincidence or fate?
A close friend actually has a very special identity? What's the mystery behind the childhood sweetheart's sword? There are many mysteries, can they be solved?
Under the butterfly feather flower tree, the purple mist is misty, I just hope you turn around, even if I will disappear in the next second...