Simply: a shop where everything costs Y100 – well,
actually it’s Y105, the price in the name doesn’t include the 5% VAT, but it
does sound more catchy this way.
It’s neither a new thing nor one limited to Japan
only. There are Poundlands in the UK, €1 shops in Germany (and other countries
in the Euro zone, I guess), “all costs X zloty” in Poland – hyaku-en shoppu are
just the...