Welcome to the Castle. All adventurers are welcomed.
The Castle is the town outside of which the player starts. It's where the King resides and who the player will be visiting to get mission rewards.
The outer walls can be climbed to escape.
It is split into 3 floors.
Turn left at the main staircase.
For costs, see Weapons
Turn right at the main staircase.
For costs, see Armor
Behind the main staircase is a room in which the King sits.
This trainer, found in the middle-ish area, isn't terribly useful: