I attended the same dojo, Goshonouchi Dojo, as I did in the past fall semester, to practice Japan Karate Association-style Shotokan karate.
This semester, I became a lot closer to the members of the dojo and even started meeting with them outside of the dojo on occasion. I also managed to pass two belt level tests while here, which will transfer back home to the US.
If possible, I really recommend doing an academic year because I felt that I got a lot closer to people in my second semester. Also, do not be afraid to just go up to people and talk to them if you are having a hard time making friends.