I just discovered and watched this today, and I've already finished it. I really loved the concept - as a student of business & Japanese, I get to enjoy watching anime, while pretending it's revision for both Japanese AND business. It's perfect!
For the most part, it really lived up to my expectations, too. Sadly, it began to go downhill towards the end, and the last two episodes really spoiled it for me - I liked this show for the business management parts, so even though the drama was fairly well-executed, it just didn't appeal to me - and frankly, really didn't gel with what the rest of the show was trying to be, either. I was quite disappointed.
But the first 6-8 episodes are great, and really worth watching. It explained several key business concepts simply, and demonstrated how to put them into practice, all while being very entertaining and light-hearted. I enjoyed it very much.
Also, it seems there's a live action film adaptation starring Maeda Atsuko, as well. Has anyone seen it? I might give it a go at some point.