Warning:  Being an information site, that means that there's tons of spoilers in the site.  If you haven't seen the series, or are still watching it or collecting, I strongly suggest you don't enter the site.  Nirai Kanai Online is meant for those that have already seen the series, and wish to either understand it a bit more, or to use it as a reference guide.  I really don't wish to spoil your fun, and all the surprizes and twists that RahXephon has, so please enter only if you've seen this series in its entirety.  Thank You.