Have you received permission from three fairy leaders and reached the Fairy Village yet?

In this village, there are fairies that open useful places that can help you in your journey. They will open a Recycle Shop and Paint Shop near Digitoll. There is also a senior fairy who will give you a discount at the Spirit Shrine where you can summon back the Denpa Men that have been lost in battle.

Lastly, there is a treasure house in this village. But you can only enter if you help a friend of fairy leaders. If you talk to other fairies, you can get information about the Springs. They also seem to know about Orbs and the Wind Tower, so why not chat up some villagers?