I hear the cup sizes are different in Japan so there might be a slight varience but what is your preferred breast size? I personally like A cup, small, convenient and they don't get in the way. Most of the girls I meet are B cup and a few C but I find C to be too big, but then again I also like girls that are around 150cm - 160cm so I guess that would be the reason why. Current GF has A cup...I love her for that