User blog comment:Crimson and Darkness/Shin DxD 3 discussion/@comment-2208155-20190807090433/@comment-2600:1:C145:D880:0:4A:C478:C301-20190807114125

Probably his form from the ex story.

Also whichever fan did the color on the pic of lint in shin vol 2 was on the money.

https://occult-research.club/project/index.php?title=Shin_High_School_DxD:Volume_2_Illustrations