Taidanotsumi
I really liked the story before the wipe. Killing everyone and then putting in a new mc is not really working for me. I wish you made the first mc go back in time so that he knows not to mess with Issei´s life. Could have made an interesting developement. I will keep this in my library but I´m not sure if I will continue reading this story. Since you already said that you do this for yourself my comment may have not meaning to you but I still had to say it. I hope that you find the story that you are searching for.
Thanks for the update why doesn’t the mc cut ties with devil go to the spawn universe where he can make deal with the mother of creation or gain the power spawn had when he fought god and the devil at the same time. The mc can create the all black necrsword from marvel universe, sword of eternity from Dc universe and there also ascalon the sword from ben 10 universe