The Namazu will soon awaken, so you and the others prepare to interrogate him.
Requirements
This quest is available if you have completed the quest It's Probably a Trap.
Starting the Quest
Talk to Lyse in Kugane to begin the quest. There will be a cutscene.
Speak with Hancock
Talk to Hancock to proceed.
Follow Hancock
Go outside and use the Aethernet Shard to go to the Kugane Aetheryte Plaza, then go northeast to where the orange arrow is pointing in the minimap. Attune to the Sekiseigumi Barracks Aethernet Shard if you have not yet done so. Talk to Hancock to proceed.
Wait Outside the Barracks
Check on the sparkling Destination.
Continue Waiting
Check on the sparkling Destination.
Speak with Lyse
Talk to Lyse to complete the quest. There will be a cutscene.
Next Main Scenario Quest
After you complete the quest, you will need to be at least level 62 to proceed to the next quest. After you reach level 62, talk to Gosetsu to accept the next quest: Once More, to the Ruby Sea.