so issei takes the place of ren/akira and that entire mess happens normally. now issei returns to kuoh for the dxd timeline to start.(just work with me on this. i had no clue on how to make the timeline work so lets just say it does also it takes place after persona 5 royal). now issei has to go through another supernatural mess and this time, its permanent. issei also has the black hair and gray eyes.