Brynhildr in the Darkness Episode 1 – While I Wait For You
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Summary
Murakami Ryota's best friend, Kuroneko, died in an accident trying to prove aliens existed when they were kids. Now, a girl who looks just like her transfers into his high school. When confronted Kuroha Neko insists she isn't Kuroneko, but she ends up revealing something else even more surprising...