All the blue drop stories revolve around a war between humanity and the Arume, an alien race consisting soley of women. Both manga series are set after the war while the anime is set before.... Read allAll the blue drop stories revolve around a war between humanity and the Arume, an alien race consisting soley of women. Both manga series are set after the war while the anime is set before. The two manga series feature some degree of sexual content; the second manga being consid... Read allAll the blue drop stories revolve around a war between humanity and the Arume, an alien race consisting soley of women. Both manga series are set after the war while the anime is set before. The two manga series feature some degree of sexual content; the second manga being considerably more...