Colonelrobbe

Soo ... i startet Darkrai quest yesterday and everything worked out fine, but when i faintet once i accidently walked wrong side cuz i didnt read good xD and left the realm. In the pro announcements they said "Horon in Dark Valley is able to restore the Dark Realm in case you have something forgotten in there." But ive already beaten Horus before i went in the dark realm so he is gone now ... and I would love 2 know if there is a way to reset the quest in the dark realm or another way to get back in it or catch darkrai ... ty for reply already ^^ :)