User blog comment:Crimson and Darkness/Shin DxD 3 discussion/@comment-9307023-20190811022813/@comment-1359322-20190812014141

@Anon, no one said a thing about losing trait through reincarnation. All we're saying is Kunou won't be reincarnated due to her role.

"The question I received the second most.

“Will Kunou and other girls that have appeared become Ise’s servant?”

Those girls who are not allowed to become a devil due to their position probably won’t. Kunou is the princess of the youkai faction in the Kyoto. There is no way that she can become a devil. But I think they can become his girlfriends even without becoming his servants, you know? There are things like local wives, after all."

- Volume 13 Afterword