Content found on public torrent trackers often suffers from compressed audio, poor subtitle translation, or security risks.
If you are a cinephile curious about the Japanese "bondage boom" of the 2000s, the YTS release of Flower and Snake (2004) is currently the most accessible way to view the film. The small file size is perfect for a single watch, and the print used by YTS is the uncensored Japanese Blu-ray.