In Astria Ascending, speak with Shery in Awisi Woods to obtain The Head of the Snake side quest.
Defeat the Duke in Harmonia
You can find the Duke in Zeft Heights. Speak with him to begin the battle and defeat him!
Go back to talk to Shery in Awisi Woods
Return to Shery and speak with her.
Obtain a Sour Strawberry
You can find the Sour Strawberry on the street of Ranta Outskirts. It is the glowing orb next to Svala.
Obtain a Shattered Shell
You can acquire the Shattered Shell as a random drop from Noises in Peyska Spring Sewers.
Obtain a Toxic Mushroom
You can acquire the Toxic Mushroom as a random drop from Noises in the Grand Canyon.
Go back to talk to Shery in Awisi Woods
Return to Shery and speak with her.
Confront Kyson in Windam
Head to Windam and speak with Kyson to trigger a fight. Defeat him!
Go back to talk to Shery in Awisi Woods
Return to Shery and speak with her.
Rewards: Hydor x1, Silver Plate x1, Omni Potion X x2 and 5000 Lums