FSDSS-945 "PuruPuru Oppai" is a term that appears to be a reference to a specific piece of media, possibly an anime or manga series, given the format of the code and the Japanese characters. The term "PuruPuru" is a playful onomatopoeia that mimics the sound of something soft and squishy, which could be related to the content of the series. "Oppai" is a colloquial Japanese term for breasts, often used in a humorous or playful context in anime and manga.

If this is indeed a reference to a series, it might be one that explores themes of comedy, romance, or slice-of-life, given the lighthearted nature of the term. However, without more context or information, it's difficult to provide a detailed analysis or summary of the series. If you have more details or a specific question about "FSDSS-945 PuruPuru Oppai," feel free to share, and I'll do my best to assist you further.