I've been living in Japan for this past semester as well. I'm on a study abroad for one semester before I graduate.
I'm glad to see there are others in a similar situation of living/studying abroad in Japan. How do you like it so far and where are you living?
I see a lot of foreigners around town, because the school I'm attending is a language school, and is famous for hosting many international students each year, so when I do see foreigners here and there around town, I assume they are going to the school.
However, when I travel around or see a foreigner I don't know, I don't usually say anything but usually we'll at least smile/nod at one another. But, I don't get all excited and am like "it's another foreigner! Let's talk!" I don't really care tbh, I'm here to practice Japanese, and seeing another foreigner, though it may be surprising, I don't feel obligated to start up a conversation with them.