User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-2405:205:118C:74F6:7DFF:974C:AC29:922E-20180425045742/@comment-95.210.189.106-20180426095542

For now we have no update, but according with the spoiler of volume 24, Ddraig tell to Issei that any time he used the Pseudo DXD, the Ophis power that is inside his body increase, and this slowing turn his soul. In the volume 25,the Amrita that Issei drunk help him to upgrade the DXD form, and according with Indra this help Issei, to reach the next stage. This spoiler will be find in the discussion blog of volume 24 and 25, by animesuki forum.