All CDs in the series were shot in 4K 50p format with top-of-the-line equipment for superior image quality. Videos are categorized into three recommendation levels (S, A, B) based on the quality of the female lead, shooting duration, and content appeal, with S-level videos being the most engaging and worth collecting. For example, the cosplayer in "Azure Archives" wears an ultra-thin, see-through white JK skirt, revealing glimpses of her underwear. We had to follow her closely, filming her as she spreads her legs wide on an escalator, first her left leg, then her right, showcasing her underwear from multiple angles. The decompression method uses double compression to avoid resource corruption.