It was quite a dismissive episode. I hate to see this kind of ep that keeps on building up to reach the key point, and that was dragged for too long. Stretching it was quite loosing once patience, but hopeful of the anticipated result. The CGI animation on the students in that top angle was soo weird to watch, so laggy. Finally, Nurarihyon was shown after a long time. Rikuo bothered on Tsurara was pretty cute, though. Seeing him multitask was good  to him.