This signifies that the file was sourced directly from a streaming service or digital storefront. WEB-DL files are generally preferred over "HDRips" because they undergo no additional transcoding, meaning the quality is as close to the original digital master as possible.
While 1080p and 4K are modern standards, a 720p resolution for a 2012 release represents a significant upgrade over the standard definition (SD) DVDs that were still common at the time. It provides a sharp, clear image that holds up well on modern screens. Sky Angel Blue Vol 87 - Yui Hatano 2012 720p WEB-DL AVC
The Sky Angel label was instrumental in portraying actresses in a more "idol-like" fashion, focusing on high-fashion costumes and stylized sets. Volume 87 remains a sought-after piece of media for those looking to archive the history of Japanese digital media from the early 2010s. This signifies that the file was sourced directly