It's pretty crazy that when you consider all the people in the universe that they could draw together, that they would take some people from the same world.

I think it's because they think it adds more drama.

[ S-Sigh... ]

Actually, Rei-kun and I are from the same world, too. I don't... really have too many memories yet, so I can't tell exactly how close we are, but from what I've seen I think we're childhood friends.