I went back to the academy and the headmaster told me the words to the song Zelda sang.
I figured out that I need to use the gust bellows to rotate the two windmills so they point to the Light Tower. I turned one, but the other one is broken and has a piece missing that fell beneath the clouds. So I will have to recover that. I was told that I would need to use a flying robot to recover it. Interesting. But I did not proceed with that today.
Instead, I decided to again look for the missing girl Kukiel from a while ago. I got some clues and eventually found out how to open a passageway from the graveyard. It led me to the demon-looking guy who had the girl… But it’s not what you think. Turns out he’s actually a good guy (his name is Batreaux) and the girl returned home.
He asked me to bring him gratitude crystals, which appear when people are grateful. When Batreaux gets enough, he can become human. Upon visiting Kukiel’s mother, she gave me 5 such crystals. I took them to Batreaux and he gave me a medium wallet. I’m supposed to return again when I have 10 crystals. At this point, I saved my game.