I have received inquiries about the trip to Kansai area many times. So I make a basic itinerary that includes Kansai area, such as Kyoto, Osaka, Kobe and Nara only. This is 7 days itinerary. But you can shorten or extend as you can.
Now I would like to tell you the best route and most economical deals about this trip.
If you visit Osaka and make some day trips to outside Osaka, such as Kyoto, Nara, Kobe, Kansai Thru Pass is a good deal. But as I explained about this pass on the post, How to use Kansai Thru Pass. Compare pass and single fare, you have to make many train and/or bus trips. And I compared a regular fare and the price of pass in the link above. But it may be complicated for you. You may be overwhelmed.
I will show you some sample itineraries by using Kansai Thru Pass in this post. I hope this post let you understand this pass easier.