The Japan Hospitality Internship Program was created to allow citizens of Australia, New Zealand, Canada, France, the UK and Germany to have access to paid internship work in the hotel industry. You can expect to earn enough money to live on, although no more than that. Consult their site:
The Pasona Internship Program was founded by the business entrepreneur Yasuyuki Nambu and allows outstanding undergraduate and graduate students from the US to undertake internships in Japanese firms. Acceptance on the internship programme is competitive, but if accepted all your travel and accommodation costs will be covered and you will receive a modest monthly wage. For more information:
You can also use the following databases to organise your own projects: