As a displaced resident of Aichi, and the Mikawa region (of which Okazaki is a part), welcome to Aichi! It's very different from Osaka, Tokyo, and Kyoto. It's certainly not a big tourist trap, and it's off the beaten path for many people. It's location is great, as it's located in the middle of everything, so once you get on the shinkansen, the world is your oyster. As for local travel, well, there are a bunch of trains, and they're pretty good. There are JR, as I'm sure you're familiar with, and there is Meitetsu, which I never really liked for some reason. Probably because I always compared it to the local trains around Osaka, which are top notch. (At least they were back in the stone age when I was there.)
Member
@J44xm went to Yamasa back in the day, and I think he's since moved back into the area. He loved his experience at Yamasa, and I can attest that his Japanese really improved during his tenure. Sadly, he has not logged in for about 10 years. I know he lived in the Yamasa facility, which I don't recall whether it was all Yamasa students there, or if it was an apartment that he got through the school. It's too bad that he's not active around here any more, as he would be a great resource for you.
I personally used to live in Kariya, which is to the west of Okazaki. So I don't know Okazaki itself too well. But I think it's much like the rest of Mikawa. Pretty laid back, and pretty nice. Anyway, when
@J44xm went to Yamasa, we used to hang out a lot.
What kind of sports do you like?
Here is a link to the Okazaki Sports Association. It's all in Japanese, but if you have anything specific you're looking for, feel free to ask! I'd love to help a fellow Mikawan! I agree that making local friends will help immensely, and sports are a good way to meet people, especially if you're good at it.
Yamasa might have information about homestay, but I couldn't find any on their website, which is pretty informative, by the way.
I found this site, but I can't vouch for their services one way or another.
As far as the weekend is concerned, that really depends on you. I used to love to travel. Seeing as Yamasa is not far from the JR Okazaki station, the whole of Japan (well, much of it, anyway) is open to you!
Also, while you're in Okazaki, feel free to reach out at any time through this forum or via PM, if you don't want it public. I really loved my time in Mikawa, and I'd like for you to have the best, most productive time there as well.