Song Min Hoa, a Chinese teenager raised in Shanghai, shares a deep-rooted friendship with Kei Narutani, forged during their youth. Their lives fractured when the Xi—a shadowy organization armed with cutting-edge technology—assaulted Shanghai, triggering a chaotic evacuation that claimed their parents and left them orphaned refugees. Haunted by loss, she fled with Kei to Japan, settling in his grandfather’s home near Komatsu Airbase, where the echoes of their past linger.

Her relationship with Kei teems with unresolved romantic tension. Though she internally embraces the role of his girlfriend, her silence has allowed him to misinterpret their bond as familial. This disconnect breeds friction, as her assertive nature clashes with her avoidance of emotional transparency, leaving their dynamic suspended between intimacy and ambiguity.

Her name carries layered symbolism: "Minghua" merges the clarity of "bright" (明) with the cultural resonance of "China" (華), while "Song" (宋) anchors her identity to the historical weight of the Song Dynasty. Uprooted by conflict, her resilience as a refugee forms the bedrock of her character, though the specifics of her growth beyond survival remain uncharted.

Her narrative role remains tethered to Kei’s journey as a steadfast yet understated presence, with no extensions into supplementary media or elaborated arcs beyond her foundational ties to his story and the overarching plot.