User blog comment:Crimson and Darkness/Shin DxD 3 discussion/@comment-2806:261:401:1AFC:7165:BCAB:94FB:9073-20190731072436/@comment-10330822-20190801001323

It's probably both. We already know how Issei is going to power-up more, Ajuka's already stated what can happen. If Ophis and Lilith can cooperate/fused back, then Issei's DxD G form will become more stable if not completely stable. Also, if he unlocks the power hidden his now all eight mutated pawn pieces, he should unlock a hidden power of Great Red. They said this like back in Volume 23.