She was introduced in "CUL makes Revolution!". CUL was featured in the shows introduction, the PV "白の季節" and the closing credits of the show. CUL was also the mascot of "CUL project; offical", a website designed to promote CUL to make her offical. Stickers were also released on sale featuring her. A MMD model used in her PVs, such as "CUL makes Revolution!", was later released. CUL also appeared alongside 秋元結衣 in a music video that later also made it to DVD.
As part of promotion, CUL has had several drinks named after her, both alcoholic and non-alcoholic, as well as a chocolate dish. These include the "Bloody CUL", "CUL and Milk" and "CUL Chocolate".
Since CUL's existence as a Vocaloid is owed to her fans, CUL already had an established fandom prior to becoming a Vocaloid. She has had much support and publicity within the Japanese fandom and this has resulted in her overall reception being positive.
After release, CUL had suffered a slow popularity raise having just 550+ hits on Nico Nico Douga, 769 hits on Pixiv and 114 hits on Piapro when researched on 08/04/2012. This made her one of the more popular releases for Vocaloid 3 at this point in time.