Akiyama Mizuki (暁山瑞希), Akiyama Mizuki is a second year student at Kamiyama High School. They are the animator of the underground girl group music circle 25-ji, Nightcord de. (A.K.A Night cord at 25:00/N25) going by the alias "Amia". 25-ji, Nightcord de members are Kanade,Ena,Mafuyu and Mizuki