From Wikipedia...
Hikikomori (Ы±àè or ø«Uè lit. "pulling away, being
confined," i.e., "acute social withdrawal") is a Japanese term to
refer to the phenomenon of reclusive adolescents and young adults
who have chosen to withdraw from social life, often seeking extreme
degrees of isolation and confinement due to various personal and
social factors in their lives. The term "hikikomori" refers to both
the sociological phenomenon in general as well as to individuals
belonging to this societal group.
