I was there only for a bit more than two weeks, so I crave to go back. We are rather introverted so we socialized (for more than a short dialogue) only two times IIRC.
Once was with other foreigners at a hostel. But the other time it was at some tiny pub in Hiroshima. They had like 3 tables and there were only the owners (a couple) and 2-3 regulars. All of them wanted to drink and hang out with us and they were very loud and enthusiastic even though we didn't understand each other almost at all. We loved it, I will never forget it.
Once was with other foreigners at a hostel. But the other time it was at some tiny pub in Hiroshima. They had like 3 tables and there were only the owners (a couple) and 2-3 regulars. All of them wanted to drink and hang out with us and they were very loud and enthusiastic even though we didn't understand each other almost at all. We loved it, I will never forget it.