ICE

Also known as:  ICE OVA, ICE: The Last Generation, Project ICE, ICE Gekijouban (movie)

The sci-fi OVA series ICE was animated by studio PPM and was initially released in three parts during 2007, followed in 2008 by a theatrical anime film compilation. The story takes place in the area of Tokyo. By 2010, the world has lost all its male population, leaving only females after an unidentified contamination. The story revolves around the "ICE" specimen that have a chance to save humanity.

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Producers, official website and other details: AniDB, ANN, Wiki