When you start this chapter, you should have filled two hearts from the nameless sister. If you haven't, you are behind schedule and should complete it as soon as possible.
Defense[edit]
Now that the brothers have arrived, you need to protect your long term investment. In some chambers, you may find a trap near the entrance that needs color added. This trap will damage the brothers trying to ravage the garden, and force him to leave.
Torch glyph[edit]
When Whaler notices that you have completed two hearts of the nameless sister, he will alert you to this, and demand that you correct your crime within one cycle.
Simply visit the sister's chamber, and speak with her. She will give you the Torch glyph, which completes this task.
First trial[edit]
The first trial is made by Mantis. He orders you to collect color from two mines, before they evaporate. Specifically, he directs you to Pharynx, located left of the Unnamed Sister, and in Bastion, left of Ava. As part of the training, you are given the Expose glyph.
When you first get the task, head to Uta and speak with her. She will give you the Extract glyph if you have filled her first heart. If not, fill it and then she will.
Head to Pharynx first. Use the Expose glyph when looking at a vein, then the Extract glyph. Don't use too much color on the glyphs: Unlike the trees, there is no additional benefit for the added expense.
To get to Bastion, you need to start collecting Amber and Violet, and try growing them in the garden. Once you opened one of Ava's heart, you can access Bastion and extract the mines in the same way.
Note that Bastion and Pharynx do not have traps. If they are attacked by the brother, the mine is gone for good.
Once cycle 9 comes, you are described the next trial, next to Uta's chamber.