Student by day, musician by night. In his dreams, ZELPHI enters the dream world of Calcite City, an exclave of Sekai, Hatsune Miku's home dimension. Inside the walls of this city, he lives his life as a prominent DJ and music producer who performs at live concerts. When he is not performing, he defends the city from crime and corruption with his allies. He has the ability to produce any sound when in contact with any instrument, and can fire mana beams and mana crystals with his glowing left hand as mysterious flames burn out of his right eye.