Dusk Maiden of Amnesia

60 years ago, a girl was left to die in abandoned building. No one knows why. No one knows how, creating legend at Seikyou school. Among clubs there's one for "paranormal investigations." Founder is ghost herself. Unable to remember how she died, trapped between life & death, Yuuko latches onto Teiichi Niiya, a freshman who can inexplicably see her, they begin to unravel things. Will unlocking secret of death free her? Will mixing with a mortal have even stranger effects? (Anime Torrents & me)