Ep. 1: Cocoon — Dream of Falling from the Sky — Old Home

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A girl dreams that she is gently falling through the sky and that a crow is trying to save her. Later, she wakes up inside a giant cocoon. Upon breaking out, she is tended to by a group of winged and haloed people who introduce themselves as Haibane. They name her Rakka. Like her, none of them can remember anything before being born from cocoons into this world, and all are named after their own dreams. They give Rakka a newly-forged halo, which slides away from her head and must be temporarily strapped on, then leave for the night. Reki stays behind to help Rakka through the ordeal of growing her wings. After they erupt painfully from her back, Rakka sleeps while Reki cleans the blood from her feathers. (Source: Wikipedia)