iyama High School. They're the animator of the underground music circle 25-ji, Nightcord de.Akiyama Mizuki (暁山 瑞希) is a second-year student at Kamiyama High School. They're the animator of the underground music circle 25-ji, Nightcord de.Akiyama Mizuki (暁山 瑞希) is a second-year student at Kamiyama High School. They're the animator of the underground music circle 25-ji, Nightcord de.Akiyama Mizuki (暁山 瑞希) is a second-year student at Kamiyama High School. They're the animator of the underground music circle 25-ji, Nightcord de.Akiyama Mizuki (暁山 瑞希) is a second-year student at Kamiyama High School. They're the animator of the underground music circle 25-ji, Nightcord de.