User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-39.43.207.78-20171022095218/@comment-30924344-20171022100442

Yeah the DX and DxD stories are entirely different. Ishibumi meant the main story and it's now potentially going past 30 volumes now because he had to split V24 in half so the second half that was supposed to go in V24, is now the contents of V25.