In the original, Kuroka left Shirone, also known as Koneko, behind when she killed her master and been made a stray devil. But instead of that, what if Kuroka decided to try and take Koneko with her in the beginning? Or they both get caught after trying to get away?

Raynare is a lower class fallen angel with a life that was short lived in High-School DxD when she got defeated by Rias, but instead of dying then, what if she lived and have some type of way to redeem herself? Sure it won't happen right away, but as time moves on, she'll might be some use for Rias and her peerage.