(To be modified later) Foreign outsiders claim this is the consequence of deceit, and they threaten the King with death or kidnap members of the royal family to force the King to reveal the whereabouts of The Most Beautiful Gemstone. However, Moon City never had The Most Beautiful Gemstone, so the King can only face death.
A lot of people died at that time, and the royal lineage suffered greatly. It was only when the outsiders realized they could not get any answers that they left in a furious rage.
The successor was the Sixth King. The experiences of the Sixth King and the subsequent seventh, eighth, and ninth kings were a repeat of the final experiences of the Fifth King, with the intervals between each occurrence becoming shorter and shorter.