- Genre: Anime, Animation, Fantasy, Sci-Fi, Adventure
- Country: Japan
- Audio: KANSAI, Anilibria, Japan Original, StudioBand
- Director: Masayuki Kodzima, Khitosi Khaga, Sinya Iino
- Cast: Miyu Tomita, Mariya Ise, Maaya Sakamoto, Mutsumi Tamura, Manami Numakura, Sayaka Okhara, Aki Toyosaki, Manami Khanava, Siori Idzava, Taisi Murata
- Description: Long ago, on Earth, a hole was discovered that extended deep into the planet. It was named the Abyss. There live dangerous creatures, and precious relics from ancient times are kept there. The girl...