User blog comment:B214/High School DxD BorN episode 2 review/@comment-3965848-20150412100351/@comment-1359322-20150412100833

Nekoshou isn't a clan. It's a variant of the species.

"She was originally a Youkai. You know of the Nekomata, right? Cat Youkai. She is a survivor of the strongest species among the cat Youkai, a Nekoshou[18]. They are a high-level youkai species who can not only master youjutsu, but senjutsu as well."