Yutaka Hirata

Several hundred years in the future, the resources of the Earth runs out, and the progression of the human race has stagnated. The world is now divided into "Units". A boy named Hajiki Sanada lives with his mother and sister in Unit 74, in a place called "Night Town", in which all electricity is shut down at midnight. The key in this story is an object called the GAD. GADs have the ability to reconstruct materials while reacting to feelings of an organic life. (myanimelist.net)

a series, about a young chef who travels to tokyo for love and finds his true love but also another girl who he falls for, looking over memories then he must choose one of them

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)