While Nazuna plays video games alone (a typical night for her before meeting Kou), Kou is invited to Suzushiro Hatsuka’s apartment, where they’re greeted by three of Hatsuka’s offspring who are completely in her thrall, so much so that they simply stood around eagerly waiting for her return.
It isn’t until they’re ordered to leave and Hatsuka takes a shower and forgets a towel that Kou learns Hatsuka isn’t a woman, but a very, very pretty man. Suddenly Kou has a distraction from the night, which had been turned into a disappointment by his encounter with Anko.
Nazuna heads to the rooftop lounge vamps to report that she may not be turning Kou into a vampire after all. Niko tells her that wasn’t their agreement. Nazuna asks that they spare Kou’s life, but Niko is furious. It’s one thing for her and Kou to take their sweet old time, but to abandon the whole enterprise? Niko won’t stand for it—which means violence is sure to follow.
Hanging out with Hatsuka turns out to have a great deal of value, as he learns that just like humans don’t really know that much about humans, vamps don’t know much about vamps either. For what it’s worth, he doesnt’ believe Nazuna was withholding anything from her, but also doesn’t think it’s likely he’ll fall for her, being an adolescent kid and all.
So he proposes a compromise: Kou will become one of his offspring, so he won’t have to be killed and Nazuna won’t have to face consequences. As far as “falling” for him, Hatsuka will simply use his vampire power to “glamor” Kou, as he did with his other children. But this isn’t about gender for Kou—he simply only wants to fall for Nazuna.
As Kou gets up, Hatsuka asks him what he hopes to do by inserting himself betwen Nazuna and a clearly enraged Niko (the others text him a picture of a destroyed table). Kou simply says he doesn’t want Nazuna to be bored. He wants The Night to remain theirs.
When he arrives at the rooftop lounge, it’s clear a huge fight has taken place, but Nazuna just left. Niko declares ominously that Nazuna “won’t be capable of proper conversation for a while”, and doesn’t want to see Kou. Kou doesn’t care. He wants to see her, and he’ll brave any vampire fracas or cop-infested pedestrian bridge to track her down.
When he does, a forlorn Nazuna is buying a beer at the same vending machine where they first met, with their positions reversed: Nazuna lit by the machine’s greenish light, and Kou looking sinister as hell in the shadows. We learn that all Niko “did” to Nazuna was insist they talk about love, because that’s what Niko likes best.
Niko makes a deal with Nazuna: she and the others will go all out and root for her and Kou, and she’ll do whatever it takes to make Kou fall for her. As long as Nazuna can honor this, they won’t lay a finger on Kou’s feathery little head. And as proponents of vampire propagation, this works out better for them too.
Nazuna insists that “it’s over” but Kou takes her by the shoulders. He tells her he thought life was boring too until he ventured out into the night and met her. Even if she “acted like a know-it-all” who only knew how to have fun, masking her ennui, it doesn’t change the fact that the two of them had a heck of a lot of fun together.
Nazuna admits that she’s had so much fun she’d forgotten the boredom that had been gradually crushing her for decades.By dint of Kou being by her side, even things she’s done before feel new and exciting. Kou says they should then simply keep finding new things to do; he’s determined not to let her ever get bored again.
In response to this, Nazuna gives him a kiss—not a vampire’s kiss to the neck like usual, but an honest-to-god kiss on the lips like the climax of a romantic movie. She’s never been the most comfortable with romance, but in Kou she has a kindred spirit, and they can navigate those uncharted waters together as she vows in her head to become “a vampire worth falling for.” Of course, Kou would be the first person to say she already is.
While this episode could certainly serve as a series finale, I hope that’s not the case. Not only is there apparently plenty more manga to adapt from, but this was by all accounts a very popular and well-regarded anime. I’m hopeful it gets a second season where we’ll have more of Kou and Nazuna feeling their way through what it means to be together.