I can't believe people are surprised by this, as I posted earlier in this thread:That's a bummer, I thought it would crush in Japan.
I don't think the Japanese opening will be that impressive. Godzilla movies and other giant monster movies usually did decent business, and enough to make their (fairly modest) budgets back, but they didn't really light the charts on fire for the most part.
Honestly Toho probably made more money off of Godzilla merchandise most years then the box office of Godzilla movies.