Churuya-san is a super-deformed, chibi-styled character from a parody spin-off, comically reimagining Tsuruya from a larger franchise. Her every action revolves around an obsessive quest for smoked cheese, fueling episodic misadventures marked by environmental mishaps—like sudden rainstorms—and disruptions from rival characters. Members of a group parodying the SOS Brigade frequently mock or thwart her efforts, amplifying the chaos. Ashakura, a chibi rendition of Ryoko Asakura, injects absurdity through futile attempts to confess feelings to Kyon. Another recurring gag centers on "Dust-chan," a sentient dust particle with a vivid personality, perpetually escaping vacuum-related disasters.

Designed for lighthearted, nonsensical humor, Churuya-san lacks narrative continuity or growth. Her exaggerated antics feature the monotone catchphrase "nyoro~n," delivered in a high-pitched voice, which punctuates most scenes. Visually, she maintains a simplified, childlike appearance with static expressions, contrasting the emotionally flat yet more detailed designs of other parody characters.

Official media avoids backstory or development, keeping her role static across crossovers and alternate universes. She remains fixated on smoked cheese and retains her chibi aesthetic, never integrating into broader plots. The character parodies the original franchise’s tone by reducing intricate relationships to absurd comedy, prioritizing rapid-fire jokes over emotional depth or continuity.