To start this quest you need first to finish "I'm The Only One You Can Trust " quest
I'm The Only One You Can TrustLevel : 81
Location : Stakato Nest Entrance
Go to Stakato Nest Entrance and speak with Kintajin
Enter in Stakato Nest and kill
Spiked Stakato

and Cannibalistic Stakato's

After you get 25 Stakato Fang's

go back to Kintajin to get your reward
Main Quest:
Only What RemainsLevel : 81
Location : Stakato Nest
To start the quest you need to speak with Kintajin again
He will tell you to go and hunt monsters inside Stakato Nest until you collect 500 Dirty Bead

After you have all Dirty Bead go back to Kintajin to claim your reward
He will reward you with : - 1 Growth Accelerator

- 2 Multi-Colored Jewel

You can use Multi-Colored Jewel to teleport in Stakato Nest from every place on map
Growth Accelerator you use on Bizzare Cocoon
to summon Cannibalistic Stakato Chief RaidBoss