http://www.time.com/time/asia/covers/501031110/story.html
If a boy disappears and nobody notices, is he really gone? Hisaki Fujishiro's withdrawal had been almost imperceptible, as hard to gauge as the ebb of a high tide. Even his mother failed to see the signposts, Fujishiro recalls: the elementary-school bullying that broke one of his fingers, the obsession with computer games, the increasing hours spent cloistered in his cluttered bedroom. These were, it seemed, the normal teethings of a preteen in postindustrial Tokyo, just another geeky kid wandering awkwardly through childhood. But gradually Fujishiro retreated completely.

The phenomenon of social withdrawal, or hikikomori was first drawn to the attention of the Japanese public following a series of highly publicised crimes.
Two years ago, a 17 year old hikikomori sufferer left his isolation and hijacked a bus, killing a passenger.
Another kidnapped a girl and held her captive in his bedroom for nine years.

