User blog comment:B214/High School DxD BorN episode 1 review/@comment-24.64.83.13-20150411015625/@comment-26209278-20150412212616

While it WOULD be good to go further with the story, the deeper they go into the LN, the harder it will be to pull out of the series without leaving it up in the air, ie, the whole 666 trihexa story. So if they do plan on cutting it off, volume 12 will probably be the easiest place for them to jump off the wagon.