Japanese tend to hide their feelings especially in front of people who they don't know. Even between friends, we generally don't tell our feeling to others. But, of course, it tatally depends on indivisuals. Japanese is a useful language to hide feelings, isn't it? I think it's because verbs are always put at the end of the sentences. It's completely my opinion, so don't take it seriously! Most Japanese realize that Japanese extraordinarily care about harmony with others compared to other countries, and it's sometimes annoying for ourselves. You don't have to warry much about being yourself, but sometimes you may need to fit in Japanese communication style. As you can see, my opinion is kind of vague just like most Japanese.笑 違う文化の中で生活することは難しいことだけど、がんばってね！　日本人はシャイだから（特に外国人に対して）自分から積極的に話したりするといいよ!! I hope you will have good time in Japan!!