Kohei's life in the academy is starting to fall into a routine and he's
definitely a creature of habit, which is pointed out at the start when
his friends note that he's been getting the same meal every day and not a
terribly healthy one at that. Kohei's fitting in well with everyone for
the most part and he's getting into the rhythm of things, though there
are some things that throw him off. In particular, one that would thrown
anyone off, is a detective show that's on and may be the inside joke of
the series as it deals with sumo detectives. Detectives who wear their
normal outfit but have a suit jacket on top of it. The theme song is
sadly rather catchy.
The first half of the episode is pretty leisurely in its pacing as it's just the kids going through the school motions. There's a pleasant scene with several of Kohei's friends, mostly girls of course, visiting his room and noting its somewhat spartan nature and the need to add some color in there like flowers. There's a very relaxed atmosphere to it all that helps to paint that perfect well that exists in the school on the surface while knowing there is something darker underneath. A joke at the very beginning of the episode about how delightful Kohei's neck looks gives clue to that as you really get a good sense of how they're toying with Kohei. Or, more specifically, how Iori is enjoying himself in messing with Kohei.
When Iori brings him into the student council president's room, he plays a rather fun little game that raises the stakes lightly be eventually turns serious. Especially when Erika arrives. While Kohei certainly got the clue beforehand, there's a certain deniability about it that you could sense he wanted to play. But with Iori stating it flat out and Erika confirming it, we're given the reasons behind how they play their game of fitting into the real world and some of their abilities. While the vampiric elements have been related to the very end of the first two episodes, it's given a lot of face time here with the encounter between the four that are involved as Seichiro is there as well. The reasons for bringing it into Kohei's awareness fully, and the threat of erasing his memories, starts the more interesting part of the series as it's where they want to go with it that will define it.