Punkun inhabits a devastated world populated solely by androids and robots, where humans are considered mythical beings long extinct. The character shows little interest in human-related matters, a defining trait. Punkun maintains a working partnership with Poppy, an android resembling a human, despite their differing perspectives. Together, they form a team responsible for protecting a designated area from threats known as Dragonewts.

Punkun's journey begins when witnessing a star fall from the sky, triggering subsequent events. During missions and confrontations with adversaries, Punkun encounters revelations about the world's history and humanity's fate, uncovering unexpected truths concerning the devastation and the nature of existence. As part of the emotionally capable android population, Punkun participates in revealing layers of the world's mysteries alongside Poppy. Their collaborative efforts in defense and exploration drive their experiences forward.

Character development occurs through ongoing engagements within this environment, facing challenges that expose deeper aspects of the world's condition and history. Punkun's role within the protective team and reactions to the uncovered truths shape the character's path.