'Call of the Night' is a fairly relaxed slice-of-life show, telling the story of the teenaged Kou and his vampiric acquaintance Nazuna.
Kou is the typical generic anime protagonist: a kind-of-nice introvert without any friends or social relations to speak of, no strong opinions on anything, and this one thing that's the plot hang-up; in this case, Kou doesn't much like the tedium of every-day life but prefers nighttime. As soon as he meets the vampiric Nazuna, his life's ambition becomes clear: he wants to turn into a vampire.
I have now watched five episodes of this show, and it hasn't managed to grip me yet. There isn't much of an overarching plot but instead an episodic format, which wouldn't be a problem if the individual stories were compelling. However, they just aren't. Kou as a protagonist is fairly boring, and Nazuna unfortunately isn't much better: in theory she is a decades-old creature of the night, but in practice she's pretty much an immature teenager with few interesting qualities.
The issue remains that Nazuna _is_ a decades-old creature of the night, and her budding romance with a teenager is, well, kind of creepy, and not in a good way.
The visuals are admittedly solid, with often gorgeous backgrounds and unique character designs. I'm not the greatest fan of the art style, but I can see why people would like it.
Ultimately, though, 'Call of the Night' just didn't manage to catch my interest. If you're a fan of slice-of-life shows, this will be your thing. I need either more complex characters or a compelling story, and this show delivered neither so far. Oh, well.