There are a lot of things or words which related to the meaning of the circle in Japan. For example, all universities in Japan have "circle" which is like club and it means gathering together and have good relationships between those who participated in it. Circle in Japan is called "輪(wa)" which represents that getting along well with others and this kind of thing is very important in Japanese culture. A lot of people really care about getting along with their class mates at school or at work.
Therefore, the meaning of the circle in Japan is good relationships between people. Also, ring is circle and this represents forever love or endless.
