ヒッキー

hikkii
(slang nickname for an) agoraphobe, someone who shuns society and prefers to stay at home with online friends for company

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an abbreviation of 引き蘢り屋 (hikikomoriya), which is a term for the recently common social tendency of Japanese adults, depressed by the lack of job prospects, to retreat into their homes or apartments, doing nothing but playing on the computer all day and eating either delivered food or food from a local convenience store. estimates say there might be upwards of 300,000 people with this condition in Japan.