Board Thread:Questions and Answers/@comment-93.86.101.195-20151017223034/@comment-25942629-20151018011355

Episode 13 came out on October 10th, and episode 14 came out earlier today. You may have better luck finding them by searching "watch Seraph Nagoya." Many sites have the Nagoya arc listed as a new series. This can be confirmed by checking the official Funimation site, which publishes the episodes with subtitles at the same time they come out in Japan. This is at 10 a.m. EST on Saturday mornings.

http://www.funimation.com/shows/seraph-of-the-end-vampire-reign/videos/episodes