One of the primary reasons collectors seek out the rather than a digital rip is the "extras" menu. This specific disc is famous for including a multi-angle feature—a rarity on DVDs due to storage constraints—allowing viewers to toggle between three different camera perspectives during specific scenes.
Based on available catalog data, "HEY-037" (or "HEY-037-DVD") typically refers to a release from the label, specifically featuring the Japanese model Kaho Kasumi (released circa 2011). HEY-037-DVD