I just received this edition of
A Taxing Woman, also by "Itami Productions". It bears all the marks of a bootleg: the exact same menus as the Geneon disks, single layered, region free, not copy protected, the "Imp ID" is Nero (not Scenarist, Spruce etc) and the back cover looks like an edited scan of the Japanese (region code is 0 instead of 2).
I haven't seen their Tampopo disk, but...