Brynhildr in the Darkness

is a Japanese manga series written and illustrated by Lynn Okamoto. It was serialized in Shueisha's seinen manga magazine Weekly Young Jump from January 2012 to March 2016. An anime television series adaptation by Arms aired between April and June 2014. Plot Ten years ago, Ryōta Murakami along with his childhood friend Kuroneko set out to search for signs of alien life. Although Ryōta is skeptical about her theory, Kuroneko insists that aliens are real. During their search, a tragic accident occurs which gravely injures Ryōta but kills Kuroneko. Due to his strong memory, Ryōta cannot forget about Kuroneko. Since then, he has been continuously staring at the night sky in order to prove that aliens exist, and also to fulfill Kuroneko's dying wish. Presently, Ryōta is a top student at his school and the sole member of the Astronomy Club. Until he gets the shock of his life when a new transfer student named Neko Kuroha arrives in his class. She bears a striking resemblance to Ryōta's dead childhood friend, although she dismisses the fact as a bluff. Ryōta later notices something amiss about Neko. When a student almost drowned is saved by a mysterious force, Neko predicted that Ryōta will also die. After displaying superhuman strength in saving his life, it is then revealed that Neko is a witch who escaped from an alien research lab. Ryōta becomes a part of Neko's life, learning more about her dilemma and the hidden forces that exist in the universe. As he sinks deeper and deeper into a world of magic and artificially created witches, Ryōta must use necessary means of preserving and sheltering other escaped witches and allow them to live normally, despite knowing the scientists of the lab would kill any outsiders involved.