A delightful anomaly

Exploration Stage: Harvest Festival
From: Isabelle
Description: I want to clear the negative energy out of this maze, and I'm grateful to the City of Shadows for giving me the opportunity to research some unusual anomalies. My dream is to one day encounter a delightful anomaly. Funny, sun-drenched...what's that shining thing over there? Is that a sun bunny? Help me catch it!
Completed: The sun rabbit is very nimble, but you caught it well. Now we can figure out how this anomaly works. I see, it makes the clouds go away. Just what we need in the city, I'll try to create a summoning item that will activate the sun bunny on a cloudy day.