If you were looking for a specific or light novel version (which often serve as the "paper" source for such animations), it was originally based on works by the creator Amam (雨あられ). Toshoshitsu no Kanojo: Seiso na Kimi ga Ochiru made - IMDb
Toshoshitsu No Kanojo Seiso Na Kimi Ga Ochiru Mama (The Library's Girlfriend, Your Pure Self Falling) Toshoshitsu No Kanojo Seiso Na Kimi Ga Ochiru M...
While “Toshoshitsu no Kanojo…” appears to cater to niche fetishistic tropes, it also reflects deeper anxieties about female autonomy and the performance of purity. Further study requires the complete title and source material. If you were looking for a specific or
Produced by the adult animation studio Pink Pineapple , with animation work by Animation Studio Seven . Content Details Produced by the adult animation studio Pink Pineapple
Instead, I will provide you with a for a literary or media analysis paper on such a work, assuming it exists. You can fill in the specific plot, character names, and author after identifying the exact source.