Do you think Japanese people are too serious? Do you ever speak to someone in Japanese only to have them just stare back at you in confusion? Do you find living in Japan downright depressing sometimes? You may need help. You may be a gaijin.
It's tough being a gaijin in Japan. I sometimes feel isolated here. It may have something to do with the small island I live on in the middle of the Inland Sea, or the limited amount of people I come in contact with on a daily basis, but I doubt it.
Or, it could be the lack of high speed Internet or the lack of convenience stores with clerks who say, "Would you like your food heated up?" but I doubt it. It has more to do with just being a gaijin.