Toshiro was sent to the world of the living during World War III when he was shot four time and dying. Not too far away a young doctor Katrina saved him. When he woke up he couldn't remember anything besides his name and the name of his Zanpakto.
A boy meets a spirit in a forest and she guides him home and they would never meet again. That's what she thought. Many years later the boy enters the forest again looking for her. When he finally sees her and catches up to her, she asks why did he come back. Then he tells her what he's been thinking about her all the...