| etude prologue Accessory Disc (1999/04/09 Windows)
|
| Gunji Tatsuya | Seki Toshihiko |
| Saeki Hitomi | Yamamoto Maria |
| Katagiri Nachi | Inoue Kazuhiko |
| Hagiwara Asami | Sakuragi Misato |
| Kusanagi Shun | Seki Tomokazu |
| Fujino Azusa | Enomoto Atsuko |
| Amano Shingo | Iwanaga Tetsuya |
| Yamada Mayu | Hitosugi Kasumi |
| Sanada Hiroshi | Okiayu Ryoutarou |
| Saeki Yuumi | Kugimiya Rie |
| Ayuse Midori | Kawai Kumi |
| Nakazawa Kaoru | Suzuki Rika |