| Role | Cast | Shinko Cast 4/20 | Shinko Cast 7/12 | Shinko Cast 7/26 |
| Isaak Gotthilfe Weisheit (a student at St Sebastian Music College) | Setouchi Miya | Hyuuga Kaoru | Sanjou Rei | Shion Yuu |
| Julius Leonherd Von Ahrensmeyer (same, a girl, pretending to be a boy) | Mine Saori | You Akira | Azumi Reika | |
| Klaus Sommerich (Alexeij Mihailovic) (same, Russian revolutionary on the run) | Haruna Yuri | Hyuuga Kaoru | Hyuuga Kaoru | |
| Roberta | Sugata Haruka | Akishino Miho | Minakaze Mai | Akishino Miho |
| Frau Keppenberg's mother-in-law, also frau Kettenberg | Hayama Michiko | |||
| Hermann Virkrich (a teacher at St Sebastian) | Tajima Kumi | Hayabusa Ren | Yayoji Ruka | |
| Maria Barbara Von Ahrensmeyer (Julius's sister) | Hiro Yuri | Kaai Moto | Junna Megu | |
| Renate Von Ahrensmeyer (Julius's mother) | Fuji Kyouko | Houjou Sayuri | - | |
| Alraune Von Egenolf (a revolutionary) | Kiryuu Noboru | Marimo Eri | Shima Yuuka | |
| Moritz Von Berg (a student at St Sebastian, a bully, their grandchild) | Yamashiro Haruka | Watari Haya | Watari Haya | |
| Frau Keppenberg | Koi Noboru | |||
| Annelotte Von Ahrensmeyer | Shiki Izumi | Koei Kanako | Arisu Miki | |
| Frau Nettok | Kazama Iriya | |||
| David (a student at St Sebastian) | Ooura Mizuki | Senju Hikaru | Senju Hikaru | |
| Adolf (the same) | Koujou Hiromi | |||
| Frau Schuttel | Kiku Kaoru | |||
| Friederike Weischeit (Isaak's consumptive sister) | Kojou Reika | Fukuju Yuki | - | |
| Frau Brenner | Houjou Sayuri | |||
| Robert | Hyuuga Kaoru | |||
| Gertrude | Minakaze Mai | Ayase Ruri | Ayase Ruri | |
Poster | DVD | VHS | CD
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None Yet | None Yet | None Yet | None Yet
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