User blog comment:Crimson and Darkness/DxD Updates 2~/@comment-30924344-20170828123441/@comment-31137559-20170901033056

Maybe it's a harem story about a guy who's already harem king and Ishibumi wants to show us the life of a harem king who actually has his harem(Issei is in the process of becoming a harem king). Maybe the MC could be Diehauser Belial. It's possible he has a harem.