Lessson: Japan Is a Weird Place

Otaku are weird enough, but even weirder - and sadder - are hikikomori, a term

which translates as "withdrawal" and refers to a person sequestered in his room for six months or longer with no social life beyond his home. (The word is a noun that describes both the problem and the person suffering from it and is also an adjective, like "alcoholic.") Some hikikomori do occasionally emerge from their rooms for meals with their parents, late-night runs to convenience stores or, in Takeshi's case, once-a-month trips to buy CD's. And though female hikikomori exist and may be undercounted, experts estimate that about 80 percent of the hikikomori are male, some as young as 13 or 14 and some who live in their rooms for 15 years or more.

The long article in the Times magazine is well worth your time.