Joshua Ingram stands guard as Princess Yūki Soleil's primary bodyguard and childhood companion. Born into a noble knightly family sworn to protect the Kingdom of Soleil, he entered the royal palace following his father's death during his youth, growing up alongside Yūki as her de facto brother. This shared upbringing forged an unshakeable bond and a profound sense of responsibility for her safety and happiness.

His defining drive is a fierce commitment to preserving Yūki's innocence and joyful spirit. This compels him to shield her completely from the harsh reality of the ongoing war between Soleil and the Empire of Grandiga. He believes hiding this truth is essential to safeguard her smile, making this protection the core of his personal mission.

Joshua radiates a bright, hot-blooded energy, fueled by a strong belief in determination and courage. He operates on the conviction that any challenge can be overcome with sufficient spirit and guts, shaping both his daily interactions and his duties. His relationship with Yūki blends the roles of loyal guardian, trusted confidant, and playful companion, often joining her in recreational palace activities.

As the conflict intensifies, Joshua actively defends the kingdom, progressing from simulator battles to frontline combat. His singular motivation remains ensuring Yūki's safety and continued happiness, driving him to face the war's dangers head-on.

Physically, Joshua is marked by blonde or yellow hair, typically shoulder-length and often braided, and possesses orange eyes. True to his knightly heritage, he pilots mecha units in combat.

This protective instinct, especially his choice to conceal the war, creates an underlying tension between his duty to Yūki and the brutal world they inhabit, stemming directly from prioritizing her emotional well-being above all else. His journey centers on navigating this dual role as both protector and friend amidst escalating threats.