[Tsuwabuki]

The world is small in general. I have all sorts of funny coincidence stories that are similar to this. I don't think it's dependent on Japan, or Asia, or "the party scene" as much as it is related the sheer amount of travel and migration humans do.

Want your mind blown? We all share at least one male and one female ancestor. All six-something-billion of us. Now, these individuals did not live at the same time (in fact, they lived thousands of years apart), but every human has at least two small branches of their family tree in common. Great groups of humans share even more branches. And what we have in common is mappable. As we become more and more global, each successive generation has a higher and higher chance of representing the clumping of groups so that as time goes on, we become even MORE related to each other, and have even more ancestors in common...

Just blew your mind, didn't I?