Talk to the portal looking thing in Kerning. (I believe it''s near the Taxi) and at 25, it should give you the option to warp there.
I leveled my Eran from level 1-30 in one day... Just do the Hero quests they want you to do, you'll fly. If you don't want to, just train at Zomb Shrooms and Hornies till 30, then do Shroom Kingdom to save Peach.