The game has a 4/5 on Japanese Amazon with about 200~ reviews.
It could be Famitsu though or something, I don't know. But anyway, main issues were kind of obvious, but people were able to look past those for the most part and gave 4 or 5 star reviews.
Just glancing over the contents of negative reviews though, it seemed like these were common:
- story is the ~same~ as the DS game (I thought this was covered by Level-5 at some point)
- needs professional voice actors, not ones that are not famous
- could be too difficult for children despite being 'marketed as kid friendly' (probably why the easy mode was added)
- feels SLOW, script was stale
- expected something more like Ghibli, didn't meet expectations (however, I think these people may have set their bar a bit high)
Dug up 4gamer ratings...
http://www.4gamer.net/games/114/G011461/
It's pretty high. 89/100 average user ratings.