a home security guard
a jobless person (with no intention to work); hikikomori
ニート, ひきこもり, 無職, プー太郎
It is a very slang internet term used by some netizens to describe people who are jobless and always at home (or rather, their room in their parents’ house) as if protecting their house.
Since last year, I’ve been working as a “home security guard” (I’ve been jobless).