Shinmai cross DxD: Multiverse Outer God

Mc is Akeno Himejima's brother in the High School DXD world. Anything I say from here will be spoilers, so you'll have to read and learn. There will be incest in the story. I'm also not very good at writing sexual scenes so many will either be skipped or left unfinished, leaving the rest to your imagination ;) This world is the combined world of Highschool DxD and Shinmai Maou No Testament.