Step inside
Reach the shrine from Dragons Den 1F after Clair's Gym battle, when Blackthorn makes it clear that power alone is not the whole test. The elders turn the badge aftermath into a question of character.
What to do here
Answer the Elder carefully and let the scene play out. This room resolves Clair's challenge in a way a Gym battlefield could not, giving Crystal's Blackthorn chapter a stronger sense of tradition and judgment.
Return with a reason
Return when you want the full Blackthorn resolution again, or when the quiet shrine side of Dragon's Den feels more important than the badge itself.