Betrayed Brothers in Arms turned Kämpfer book 1(futa/genderswap massiveharem)

All because of one betrayal that happened to Issei and Kiba and Gasper to dimensions that had their own universes in them was going to be merged together to create a new dimension one that has four great factions the devil faction And the angel faction and the fallen angel faction and Kampfer faction the Kampfer faction a group of people who represents being the servants of other lifeforms from other planets and merging to dimensions together will create a type of reset button people with a strong willpower will remember the merge reset meaning just because Rias was a spoiled brat who wasn't physically strong but her willpower to make things go have a way with so strong that she will be one of the people to remember she's not actually one of the people who will win remember the reset a just saying if she did have a strong wheel she could but we both know she barely use that brain of hers so no she won't remember the reset the one who made this reset was none other than great red turns out grade red is not here instead they are a woman but why did great red choose to do this why was it so important after issei and Kiba and Gasper was betrayed for great red to feel like they had to do something like this find out by reading the book this is the story of issei and Kiba and Gasper turned Kampfer after being betrayed along with their friends and Allies and future shed harem on so many trials they have to deal with in the special reset that will make so many changes to the dimension that will be merged with another dimension find out what trials they will face in the book