[Is there anything to do there past talking to the 'developers' though?]

If there was an easier method, they did not consider it~ I believe the moon's princess Kaguya drank the Hourai Elixer, thus becoming immortal. She was exiled from the moon and took residence on Earth. To avoid being found however she hid the real moon after the Lunarians went looking for one of their emissarys who fled to Earth~