User blog comment:Crimson and Darkness/DxD Updates 2~/@comment-2208155-20181222171020/@comment-3965848-20181222180532

I'm not gonna read all of it now but from the firts few lines it says:

I'm am the 『Pawn』 of Rias Gremory.

I vowed to become the strongest 『Pawn』. Was I able to get close to it even if a little? I want to show this to Rias.

I am Hyoudou Issei, everyone calls me Ise.

I am currently a third year of high school. Think of me as a high school demon.

And though I was what I was, I did not know what to do with what was happening in front of me.

Somehow I'm in a place that looks like a Church.

There are many people I know around!

"Son of a bitch! Why is Ise going to get married?!"

This is likely that moment where Ise dreams of marrying all the girls and is visited by Chichigami. This scene is kinda of callback to the start of Vol. 2, it even opens in the same way.