Can't find anything by GEO, but there's a blog post floating around 5ch (2ch) and other aggregation sites like Hachima Kiko that says something similar about their shop (where they work, I guess):
http://www.nariyukigame.com/archives/52861727.html
"Without a doubt, the best start for a PS4 game in the system's [domestic] history."
"Many young adults, JHS and HS students came to the shop [to purchase MHW and related goods], a trend that wasn't seen for DQXI's release. It appears that the age range for this title has widened a bit [compared to other PS4 games].
Rather, while for the 3DS games such as 4G and Cross (MHX) there were many primary school students, the impression I got [for MHW] of who was buying was similar to that of the portable titles on PSP."
"As for the first day, of course there was the factor of pre-orders having been completely filled, and the PS4 HW sales aside from the MHW bundle/pack-in were nothing to write home about, however,
one thing I think we can expect is something I heard from students [who were buying/interested in the game], who said 'my friends at school were pretty psyched about this', or 'a friend invited me to play with them'--that is, decent indirect sales promotion."
Of course, still just a blog by what is likely one shopowner, so don't take it as gospel for the nation or anything.
