Sanctum: Chasing Clouds is a puzzle dungeon in an underground cave in Nimbus Fields, built around Sealed Aniimo Turbo's Cloudwalk and the Gravity Pull player skill. Here's where to find it, how to solve its puzzle, and where to find all four chests.
Where to Find Sanctum: Chasing Clouds
Sanctum: Chasing Clouds is inside an underground cave system in Nimbus Fields, in Breezy Plains.

The part of the cave that leads to the sanctum entrance opens once you've offered a total of 120 Lumin Amber to the Branch.
Sanctum: Chasing Clouds Objective
The Sanctum Challenge objective shown in-game is to reach the heart of the sanctum and restore the Vein.

Beyond that objective, there are 4 hidden chests throughout the sanctum.
How to Solve the Chasing Clouds Puzzle
- Unlock Gravity Pull by reaching II Student rank before you enter if you want to claim every chest
One of the sanctum's mechanics is Cloudwalk, the mobility skill of the Sealed Aniimo, Turbo. Use it to float through the clouds and to carry Batteries attached to its wool.

Use the player skill Gravity Pull to move the Batteries.

Solve the Power Node puzzles to unlock the doors that lead deeper into the sanctum.
Chest Locations in Sanctum: Chasing Clouds
- Chest 1
At the first branching path, take the path on the right with the fire traps. Avoid the traps to reach the chest.

- Chest 2
At the second branching path, enter the path on the left with the moving wall.

- Chest 3
At the third branching path, toggle the lever on the left to open a path in the left wall.

- Chest 4
Keep following the route past Chest 3 until it brings you back to the room with the third branching path. Toggle the lever on the right and enter the pathway that opens. Don't take the route going down yet: go left to find the last chest.

The route going down leads on to the cube at the end of the sanctum. If you take it by mistake, you can float back up and go back for Chest 4.
Restoring the Vein and Rewards
Once you've collected all 4 chests, head to the end of the sanctum and interact with the cube to repair the Vein.

Restoring the Vein for the first time rewards 1 Lumin Amber and 500 Character EXP.

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