Hikikomori

After suffering from hikikomori for several months, Hiroshi turned into a johatsu without leaving a single trace.

The new taxonomy of Japanese sexlessness also includes terms for groups such as hikikomori (“shut-ins”), parasaito shinguru (“parasite singles,” people who live with their parents beyond their 20s), and otaku (“obsessive fans,” especially of anime and manga)—all of whom are said to contribute to sekkusu shinai shokogun (“celibacy syndrome”).

Many prefectural governments operate support centers for families of hikikomori, but they are staffed by nonspecialists. The priority is to help prise hikikomori out of their rooms and get them back to work, a solution that may leave psychological issues unaddressed.