There will be a sidequest at midday when you enter the cave by the beach on the bottom left of the kokoa village hub, enter the cave, go right and interact with Kaela. Progress the sidequest and that should be it. Hope this helps
nvm, did you see those black/dark purple puddles? well, at the end of the deep magic forest, on the left side you will see like an entrace, you cross it and you only need to search
