Prinzessin Visula, also known as Vijura, hails from the wandering planet Vijur, designated X23. Her father, King Vijur, rules this celestial body now suffering accelerating decay. Charged by the King with finding vital "life elements" to save their world, Prinzessin Visula commands the exploratory missions focused on Earth.

Initially committed to her people's cause, Prinzessin Visula directs military operations under Generals Bagoo and later Zudar. These operations involve repeated incursions into human bodies, inflicting severe physiological distress on Earth's inhabitants. However, direct exposure to human society sparks a profound ethical shift. After encountering Susumu Sugita, Prinzessin Visula resides temporarily at his home in Nagisa City. This experience cultivates astonishment and remorse upon understanding the physical agony caused by the Vijur intrusions.

This new perspective leads Prinzessin Visula to openly challenge and oppose General Zudar's escalating aggressive tactics against humanity. Her dissent marks a turn towards reconciliation and peaceful coexistence. King Vijur eventually arrives on Earth, motivated by paternal concern and a desire to resolve the crisis without human annihilation. His intentions, while centered on Vijur's survival, lack inherent malice toward Earth.

The conflict climaxes in General Zudar's rebellion as he attempts to seize control of Vijur. King Vijur intervenes but is wounded during the confrontation. Zudar feels regret in his final moments, expressing that his greatest happiness stemmed from loyalty to Prinzessin Visula before succumbing to his injuries. This resolution opens a path towards a potential peaceful future between Vijur and Earth. Prinzessin Visula's journey traces a transformation from dutiful royal to a pivotal advocate for peace, shaped by empathy developed through human contact.