ｅｌｓｅ　～風鈴の少女～

In 2029 two thirds of Japan territory are under rule of socialist governments. Independence wars break out everywhere, but love feelings do not change, and many people try to live quiet lives.

Main character is a college student who one day manages to save a girl from a chase by black glasses men. Girl's name is "Else", and there is something mechanical about her. From this day young people cohabitation begins.

[From vndbreview]