Fourth volume of the Japanese anime series, set in a remote future where humans co-exist with the Haibane, a mysterious race of angelic beings. Rakka, a young girl, finds herself hatching one morning from a giant cocoon. With no memory of her previous life, she struggles to adapt to her new existence as one of the Haibane. In this volume, Reki begins to distance herself from her friends as she prepares to confront the darkness that will engulf her, but Rakka works desperately to find a solution that will offer her salvation. Episodes are: 'Parting, Darkness in the Heart, Irreplacable Thing'; 'Bell Nuts, Passing of the Year Festival, Reconciliation'; and 'Reki's World, Prayer, Epilogue'.