No, not to beg for something, although I’m sure the folks in Japan could definitely use your help and would never ask for it. Consider donating to one of many worth causes like the Red Cross or Save the Children. (there are many others)
But I digress. What I really mean is, when you’re in a social situation, you’re sort of milling around and looking to talk to someone, stick your hand out and say “Hi, I’m XYZ” to the person seemingly doing the same. You’d be surprised at what happens. People don’t bite. People aren’t going to say “ugh, you’re weird” unless you’re in middle school or wearing a pocket protector. They’re actually going to embrace it, introduce themselves back and be very happy that you made a move. I guarantee it.