M-01 (Opening Theme)
Lyrics: Miroku [弥勒]
Composition: Reijiro Koroku
Arrangement: Reijiro Koroku
Vocal: Yusuke Nakamura

M-02 (Ending Theme)
Lyrics: Kotaro Aso [麻生香太郎]
Composition: Reijiro Koroku
Arrangement: Reijiro Koroku
Vocal: Kana Bunke [分家か奈]

M-03 (Drama)
Screenplay: Hiroyuki Ohnuma [大沼弘幸]
Music: Reijiro Koroku
Cast:
- 濁(ダーク)/Dark: Kappei Yamaguchi
- 清(リーン)/Leen: Yuri Amano
- 筐(ショウ)/Shou: Takehito Koyasu
- 燕(エン)/En: Toru Furusawa
- ティアマト/Tiamat: Kazuko Yanaga [弥永和子]
- Narration: Hitoshi Kubota [窪田等]


First press limitied edition comes with a 24 pages booklet, "Oukoku Tsuushin Vol.1" [央国通信 Vol.1] including characters/world introduction, interviews, characters' illustrations, etc...