Aiyoku no Eustia -Original CharacterSong Series- ERIS/FIONE
| Composed by | Ryota Fujii |
| Arranged by | Misaki Nakajima / Ryota Fujii |
| Published by | Side Connection Music |
| Catalog number | SCMN-008 |
| Release type | Game Soundtrack - Official Release |
| Format | 1 CD - 5 tracks |
| Release date | January 27, 2012 |
| Genres |
"Clientes"
Lyrics: Sanagi
Composition & Arrangement: Ryota Fujii
Vocals: Yuu Asakawa
"Misty Light"
Lyrics: Sakura Nagahara [永原さくら]
Composition & Arrangement: Ryota Fujii
Vocals: 斎藤佑圭
"Visionaries -Piano Attractive-"
Lyrics: Sanagi & Sakura Nagahara
Composition: Ryota Fujii
Arrangement: Misaki Nakajima
Vocals: Yuu Asakawa & 斎藤佑圭
Lyrics: Sanagi
Composition & Arrangement: Ryota Fujii
Vocals: Yuu Asakawa
"Misty Light"
Lyrics: Sakura Nagahara [永原さくら]
Composition & Arrangement: Ryota Fujii
Vocals: 斎藤佑圭
"Visionaries -Piano Attractive-"
Lyrics: Sanagi & Sakura Nagahara
Composition: Ryota Fujii
Arrangement: Misaki Nakajima
Vocals: Yuu Asakawa & 斎藤佑圭
| 1 | Clientes(クリエンテス)の無垢 |  | |
| 2 | Misty Light | | |
| 3 | Clientes(クリエンテス)の無垢(Off vocal) | ||
| 4 | Misty Light(Off vocal) | ||
| 5 | Visionaries－Piano Attractive－(Clientesの無垢×Misty Light) |
