![](https://cdn.animecharacters.io/images/anime/large/2698-67b912ef.jpg)
Format
TV
Episodes
13
Episode Duration
26 min per ep
Status
Finished Airing
Premiered
Fall 2007
Aired
2007-10-03 to 2007-12-26
Source
Manga
Rating
PG-13 - Teens 13 or older
Genres
Drama
Sci-Fi
Girls Love
Studios
BeSTACK
Asahi Production
Producers
Pony Canyon
Memory-Tech
Showgate
King Records
Licensors
Sentai Filmworks
Blue Drop: Tenshi-tachi no Gikyoku (BLUE DROP ~天使達の戯曲~)
Five years ago, something horrifying happened on Kamioki Island. Something so nightmarish that it stripped all memory from Mari Wakatake's mind even as it left every other human on the island dead in its wake! Now enrolled against her will at an isolated girl's academy, Mari is unaware that hidden eyes are watching her, waiting for her memory to return. Buried in her psyche is the most terrifying secret of all: while Mari was the only human who lived, she may not have been the only survivor! As something in a female skin invades Kaihou Academy, Mari's only hope may lie in a strange girl to whom she is inexplicably drawn yet cannot trust. (Source: Sentai Filmworks)