Okay, now I remember! Mushroom Castle is a palace where mushrooms live. It's currently in danger, thanks to a mass betrayal. Do you want to know more?

Okay, then I'll need one more thing from you. This one's simple. I need you to head over to Ariant and get me a bottle of Pure Water, since I need to fill up an oasis nearby.

Guess you're not as interested about Mushroom Castle as you said you were...

Ohh, nice. There's nothing that captivates the visitors of a desert quite like an oasis! Ah, anyway, what did you need me for again?
1) Mushroom Castle! Come on!

Oh yeah. You're talking about the Mushroom Castle, right? It's part of the Mushking Empires. I've heard that Mushking is going through some troubles as of late. Do you want more on this story?
1) You already told me this earlier!

Ah… Did…did I really?

What? You don't even know where you can find that? Buy it at a department store in Ariant.