User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-197.226.61.249-20180704052158/@comment-28884330-20180704140112

Shin DxD is essentially DxD Volume 26, and will serve to wrap up the rest of the tournament and final arc of the series. It’s under a different label to prevent the original DxD from appearing to have too many volumes and also to boost sales, much like the “sequel” to To Aru Manutius no Index.