User blog comment:B214/Talk About What You Want! 3/@comment-24098614-20150711233844/@comment-24502975-20150712001226

Since this is a legit question...

SLASH/DOG is a web novel, there's no sales. It's free to read. As for popularity, it's popular for DxD fans but it doesn't have anywhere near DxD's popularity (which is to be expected, it's a web novel vs a light novel + anime + manga which has been going on for years).