I have live in japan for almost one year. Though there have many difficulties, but i think it worth to come here. As a Chinese, there should not many surprise, at least before i came here, i think that. I spent a half to change that mind. There have many things worthy to see and feel, especially to a wester. Maybe with some who have experience will make your visit adding funny.
About the details things or feelings, i will not say, everyone has his own option, so do it by yourself is the most. wish you good luck enough to fully enjoy the life of japan