Yukino is walking home from the forest and sees the mysterious blue bird that is mentioned in a fairy tale. Yukino see Suzu and drags her along to go find the mysterious blue bird. They end up not finding it, but finding another bird that has never been seen before. The bird is small and a gray color (this is the blue birds other form). They chase the bird and end up falling into a cave and can't climb out. Suzu gets injured on the fall. Ikuto goes in search for Suzu and Yukino...