hiiragi_ is an Japanese IDM/ambient project organized by Kazuki Mochizuki and others. Kazuki explains:
The music of hiiragi_ polishes expressions, which comes from a distinctive view of the world. It’s filled with transparent feelings that everyone experiences at once. The memory of the far past agonized in order to forget speech to present myself, and then the journey of the heart begins. The transiency that tries to efface memory will set your heart free.