Lady Shizuka talks about Sakurajima's Greater god, the giant Cherry Tree. The giant tree in Sakurajima Depths is the vessel for Sakurajima's ruling god. It is constantly sprouting new buds so it's always blooming. Kumaso Village holds a festival every year to worship, but they need to hire magicians to chase out the Youkai before they hold it.
Lady Shizuka has this knowledge about the tree from second-hand sources, books. When Lady Shizuka was at home she could only experience these things from books, but it is extremely different being here in your own body looking at the tree. She wants to continue experiencing different types of things for herself from now on.