Pokemon explorers of time extras/help?

Question

In explorers of time, when you beat regigigias do you HAVE to go to concealed (somethin i forgot)? and If you don't what's at the end of the concealed (???)? then,

do you know any easter eggs for it ( I know the pink celebi)

Answer 1

neh, you don have to,it's just a boring old ruin. But I did, it was kinda good.  just do plain jobs for a few days, then you'll have a dream, then yu'll get on to the climax of the game.