User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-31764731-20180326160235/@comment-49.229.198.177-20180327071807

I doubt that Kiyome Abe will ever be included or appears in the story again.

1. She isn't a popular or significant character. 2. Her character is rather redundant. Issei already has four Ojou-sama girls (Rias, Ravel, Le fay, Elmenhilde). I don't see any points for adding another one into his harem.