Alone in castle, a figure plays a piano... Deemo. One day, a girl falls from the sky A castle litered with mysterious inhabitants. A sacred the growing by the melody of piano. A girl no memory and Deemo. A gentle story the will touch you heart.
| Art | Hiromasa Ogura | Art Direction |
| Sound | Yuki Kajiura | Original Music Composer |
| Writing | Junichi Fujisaku | Screenplay |
| Production | Junichi Fujisaku | Production Director |
| Sound | Jin Aketagawa | Sound Director |
| Editing | Yoshinori Murakami | Editor |
| Visual Effects | Shunsuke Imaizumi | Modelling Supervisor |
| Camera | Hisashi Ezura | Director of Photography |
| Visual Effects | Yumiko Katayama | Color Designer |
| Sound | Yasunori Mori | Music Producer |
| Directing | Yoshihiro Hiramine | Assistant Director |
| Writing | Bun-O Fujisawa | Screenplay |
| Directing | Shuhei Matsushita | Director |
| Visual Effects | mebachi | Character Designer |
| Art | Hiroumi Yoshida | Art Designer |
| Crew | Kouichirou Tamura | Technical Supervisor |
| Editing | Akira Saitoh | Color Grading |
| Sound | Hinano Takashima | Theme Song Performance |
| Art | Yoshitsugi Yoshida | Storyboard Artist |
