How "good" do you live with 150000 Yen / Month? I ask because I could have a chance to get to a stage in Japan. They would pay me the living plus a 150000 Yen / Month. The bad thing is that they want me to stay 12 months. Yes, one year. Somebody had the experience already?
In Tokyo? That's pretty poor. Will they pay for all your bills too? If you had 150,000 for spending money, then it could be a fun place. If not, you need to consider a good 20,000-50,000 a month on heat, internet, and other utilities depending on how you live. If you like to drink and go out, then you'll have to be very frugal.
Actually its located in Atsugi, Kanagawa-Ken, and they pay both traveling tickets and the water - gas - electricity bill. Duh.