I pick up lots of new business ideas from Springwise and one that may interest you if you are in the travel business and interested in attracting visitors from Japan is http://mygengo.com a Japanese English translation service.
Another travel related idea is one that provides users of Amplified Journeys with an entire playlist of location-inspired music to listen to during their trip. For example a trip from Paris to Munich focusing on dance music returns a playlist of some 110 tracks that can be clicked on for more information, edited, and then exported to iTunes. It’s at development stage and currently free to use . Let me know what you think.