Well the bad reviews I've been reading is how bad the AI is in the game. Something like this could really ruin it for me. I feel like Tales of Graces F has bad AI (I"m probably the minority), but it's playable with friends as it allows 4 player couch co-op.
Edit: Just repeating what I've read, not saying I won't pick the game up.
True, Ni No Kuni's AI is bad, but only in the beginning to mid (25-30ish) game, once you start to level, they start getting smarter and dying less, atleast for me it did xD Rainbow Moon is also a great game, i love the OST in that game so much xD
"But just when everyone had let their guard down, a vast number of AIDA tentacles have appeared and pierced Atoli's body...."