A detailed documentary-style work depicting a three-year period in which a schoolgirl, dressed in her uniform, undergoes extreme humiliation as she is given enemas by multiple men and forced to defecate while they watch, eventually becoming a "public toilet girl." Part 1 captures the scene of a new rental contract, conveying the intense tension and bizarre pleasure embedded in each step. The story delves into the girl's psychological transformation, the reactions of those around her, and the complex human relationships that emerge, adding depth to the narrative.