[Katakuri House (Katakuri-ko)] Shiroi Fuwafuwa to Kuroi Muchimuchi

A timid short‑haired schoolgirl is forced into a “first‑time” arrangement with a dominant long‑haired classmate and a figure in a doorway, all centered on a vibrating device that threatens to overwhelm her. The narrative spotlights the exaggerated busts of the participants as the short‑haired girl struggles against the insistent pressure, while the figure in the doorway promises a “convenience store” encounter that could seal their deal. Tension builds as the short‑haired girl protests and the size of the toy is debated, leading to a climax where she must decide whether to submit to the overwhelming pleasure or remain “late” and helpless.