That means the beach is already unlocked.
On the forest's main map, there should be a south arrow that leads to the beach below.
Enter the beach and win at least 3-5 battles there for more events.
Good, she is very cute and I like her, but she is also sadistic and possessive and for a moment I thought that wla wanted to steal my body and assume my identity, but she also seemed to want to be with me at times, so I was worried.
Ah the yellow crystal that says it has something to do with light magic is to help light up the cave isn't it?