Shimajirou to Kirakira Oukoku no Ouji-sama

The story follows Pearl, the young prince of the Glitter Kingdom, who is currently preparing to ascend the throne and take on the responsibilities of a king. However, his path to leadership is interrupted when he departs from his homeland to travel to Challenge Island. During his absence, an unexpected crisis strikes the kingdom, causing it to lose its precious glitter—a vital source of light and magic that sustains the realm. Without this essential radiance, the entire kingdom faces grave danger, placing immense pressure on the young royal to act. Struggling with self-doubt and a deep lack of confidence in his own abilities, Pearl finds himself overwhelmed by the weight of the situation. Fortunately, he does not have to face this daunting trial alone. Shimajirou and his loyal friends step forward to support the hesitant prince, joining him on a critical quest to restore what has been lost. Together, the group embarks on an adventurous journey to locate three special keys hidden across their world. These keys hold the only hope for saving the Glitter Kingdom, forcing Pearl to confront his insecurities and discover the courage required to become the ruler his people truly need.