The new OVA will feature the prequel short story "Snow Globe," which debuted as part of a light novel volume that bundled with a limited-edition version of the original PC game.
| Directing | Jin Tamamura | Director |
| Sound | Takayuki Yamaguchi | Sound Director |
| Writing | Shogo Yasukawa | Screenplay |
| Camera | Naotaka Watanabe | Director of Photography |
| Production | Hiroyuki Aoi | Producer |
| Production | Kei Nishi | Producer |