A keyword that addresses some of these issues in Japanese culture is "hikikomori" which literally means "withdrawn" and describes a wide range of social and psychological conditions.
Of the following books, the Zielenziger is probably the best known in addressing this issue:
*Shutting out the sun : how Japan created its own lost generation / Michael Zielenziger.
New York : Nan A. Talese, c2006.
Japan's changing generations : are young people creating a new society? / edited by Gordon Mathews and Bruce White.
London ; New York : RoutledgeCurzon, 2004.
Japan after Japan : social and cultural life from the recessionary 1990s to the present / edited by Tomiko Yoda and Harry Harootunian.
Durham : Duke University Press, 2006.
There are some articles in the anthropology and psychology literature such as the following:
Japan's Hidden Youths: Mainstreaming the Emotionally Distressed in Japan http://www.springerlink.com/content/r005370806540227/
Chikako Silva's Too Lonely to Die Alone: Internet Suicide Pacts and Existential Suffering in Japan
Another place to look is the Bibliography of Asian Research http://library.duke.edu/metasearch/db/id/DUK01374