@stradar, go back to where the King lives, there is a jail in west part of castle, talk to Robot thing in there, it'll help you reach the keylock ^.^
@PsychoticCreeper, Well the max party capacity is only 5, if you get the Mio in your party you can't fight with the Crazy artist. If you fight with the Crazy artist before getting cursed eagle, you'll encounter Crazy artist in Zulwhern fight and recruit him.
@rpg_oldy, thank_you.exe/lol
Umm... Do you have Mio in your party? If you explain when did this happened I'll look for the solution ^.^
Arena and Dome Sidequest is going to add in later patches, sorry for the delay, I'm working on adding little side quests and fixing the grammar mistakes I made.