Krystal Nokanatika

She is Sato's childhood friend, though her true identity is that of a princess from Nokanatika. As a young child, she spent ten years living in hiding on Earth to escape the threat of the Abyss King. It was she who eventually guided Sato into the otherworld, setting him on the path to becoming the Ring King. While she is known for her gentle and virtuous nature, having been deeply shaped by modern values, she finds herself tormented by fierce jealousy and inner conflict over Sato's destined obligation to wed other princesses in order to gain their power.