A Shady Request
Hamsvich needs 5 pinches of Sleep Powder. You should be able to get that from the Cobalt Frogs in Haniwa Cave!
Goal
Sleep Powder × 5Reward
Sleep Antidote × 3Chain
Leads to 
A Shadier Request
Dialogue
HamsvichHello, passerby. I'm so glad you happened
along here. I need some help!
I was going to ask that gatekeeper over there for
his aid, but he's been giving me very strange looks.
Ack! He's glaring at me now. What did I ever do
to him?
Er...anyway...I really need Sleep Powder!
The kind you use to make Sleep Bombs!
Five pinches of Sleep Powder should do. In return,
I'll give you 800 Dosh and three Sleep Antidotes.
[Choice: Accept / Decline]
HamsvichThat's 5 pinches of Sleep Powder! Don't forget!
Oh boy. That fellow by the gate is staring at me
again. Perhaps I have spinach stuck in my teeth.
But...how would he know a thing like that?!
HamsvichOh. All right then. Maybe I'll just ask the
gatekeeper...if he ever stops glowering at me!
HamsvichWould you look at this? You got your hands on
5 pinches of Sleep Powder! Are those for me?
[Choice: Hand over / Keep for now]
HamsvichOh! I wasn't expecting you to just hand them over
like that. Thought I was going to have to beg!
Thanks for saving me the embarrassment.
Here! Payment! Take it!
HamsvichI thought those were the items I had asked you for.
Guess I was mistaken. How embarrassing!
HamsvichThat gatekeeper is staring at me again. Maybe we
went to school together or something...