Extreme-Black Brynhildr is a manga science fiction written and illustrated by Lynn Okamoto. The story also features an adaptation anime by Studio Arms, which began airing on April 6, 2014.
When he was young, Ryota Murakami was friends with Kuroneko, a girl his age, who believed in the existence of aliens. Seeing skeptical Ryota Kuroneko decides to find a way to prove it, but a tragic accident occurs: Ryota is seriously injured while Kuroneko dies.
