: This timestamp indicates when the collection was compiled or released, likely as a monthly reward for supporters on platforms like Pixiv Fanbox or Patreon. File Format and Usage
: This appears to be an original character (OC) or a specific series created by Ukikusaya. Archive files named this way often contain high-resolution illustrations, layered PSD files, or "making-of" process images. Ukikusaya_Emori_Uki_2022-02-20.7z
: This is a compressed archive created with 7-Zip . It is used to bundle multiple large image files (like PNGs or PSDs) into a single, smaller file for easier downloading. : This timestamp indicates when the collection was