Brynhildr in the Darkness - S01

Skeptical Ryouta Murakami and ambitious Kuroneko went into the wilderness to prove that extraterrestrial life exists. Then a tragic accident took Kuroneko's life and left Ryouta critically injured. Ten years later, Ryouta is living a normal high school life. He promises to prove that aliens are real in honor of his late friend. One day a transfer student named Neko Kuroha arrives, looking strikingly like the late Kuroneko, with a similar name too. Strangest of all, she seems to have supernatural powers. As Ryouta grows more interested in Neko, he is pulled into a deadly world where dangerous scientists hunt magic-wielding witches who have escaped from their secret research laboratory. Neko is one of those escapees, and there are many others in the same situation. It falls to Ryouta to protect them from the people who want to capture them.