Anko Uguisu, Call of the Night detective character guide, cover graphic for RankRX blog post.
Anko Uguisu, the vampire-hunting detective from Call of the Night.

Anko Uguisu Who She Is and Why Call of the Night Fans Can’t Stop Talking About Her

For the first stretch of Call of the Night, the story feels almost cozy a sleepless teenager, a mysterious vampire, and a slow-burn relationship built on nighttime walks through empty streets. Then Anko Uguisu shows up, and the whole tone shifts. Suddenly there’s a professional vampire hunter in the mix, and the show’s central question should Kou actually become a vampire? stops being theoretical.

Disclaimer: Streaming availability varies by region and can change over time. Always check your own streaming service for current access before recommending a title to your audience.

If you just finished the episode (or manga chapter) where she’s introduced and want the full picture of who she is, this covers her role, her motivations, and where she fits into the bigger story, without spoiling more than you’ve likely already seen if you searched for her by name.

Quick Facts

DetailInfo
Full nameAnko Uguisu
RolePrivate detective specialising in vampire cases
MotivationPersonal revenge tied to a past traumatic event
First appearsAround the manga’s 36th–38th chapters / the anime’s later episodes
Anime voice actorMiyuki Sawashiro
Source materialCall of the Night (Yofukashi no Uta) manga by Kotoyama
English publisherViz Media
Where to watchHIDIVE, Crunchyroll (availability can vary by region)

Who Is Anko Uguisu?

anko uguisu

Anko Uguisu is a private detective who specializes in vampire-related cases, tracking them down, investigating disappearances connected to them, and, in some cases, hunting them outright. Unlike Nazuna, the story’s central vampire, or Kou, the human protagonist drawn toward that world out of curiosity and insomnia, Anko approaches the supernatural from a place of controlled, professional distance.

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That distance doesn’t last, though. As the story develops, it becomes clear that her interest in vampires isn’t purely professional—it’s personal, rooted in a traumatic event in her past that gives her pursuit of them an edge of genuine obsession rather than simple detective work.

Her Role in the Story

Anko’s introduction functions as a turning point for Call of the Night’s tone. Before she arrives, the series leans into the strange comfort of nighttime wandering and the slow, ambiguous relationship between Kou and Nazuna. Anko brings consequence into that world she represents the idea that becoming a vampire isn’t just a personal choice with no cost, and that somebody out there is actively working against that world.

For Kou specifically, her arrival forces a more serious version of the question he’s been circling: does he actually want to become a vampire, now that he’s face-to-face with someone who has devoted her life to destroying them? She doesn’t just add a new obstacle to the plot — she reframes the stakes of a decision the story had, until then, mostly treated as dreamy and low-consequence.

Why Her Motivation Matters

What keeps Anko from being a one-note “hunter” character is that the story treats her motivation as something worth understanding, not just a plot device. Her methods can be cold and calculating, but the narrative keeps hinting that there’s real emotional weight underneath the professional exterior — a loss she hasn’t processed, channelled into a mission instead.

That layering is a big part of why she resonated with readers and viewers as more than a mid-story antagonist. She occupies a genuinely ambiguous space: not quite a villain, not quite an ally, and not entirely at peace with what she’s chosen to spend her life doing.

Anko Uguisu in the Anime

In the Call of the Night anime, produced by Liden Films and based on Kotoyama’s manga, Anko is voiced by Miyuki Sawashiro. She’s introduced in the back half of the series, with her first appearance tied to the same story beats as the manga’s mid-30s chapter range — around the point where Kou is actively trying to attract new “business” for the sleep-together shop he and Nazuna run together, and ends up crossing paths with a tired-looking stranger who turns out to be far more than she first appears.

The anime is available through streaming services including HIDIVE and Crunchyroll, though exact availability depends on your region, so it’s worth checking your own account before assuming it’s there.

How Anko Compares to the Series’ Other Characters

  • Versus Nazuna Nanakusa: Where Nazuna represents the freewheeling, almost carefree side of vampire life, Anko represents its cost — the version of the story where crossing into that world has real, lasting consequences.
  • Versus Kou Yamori: Kou is drawn to the supernatural out of curiosity and dissatisfaction with his ordinary life. Anko approaches it from the opposite direction — someone who has already lost something to it and wants to take that world apart.
  • Versus his human friends (Akira, Mahiru): Where his childhood friends represent the pull of his old, “daytime” life, Anko represents a third option entirely — someone who’s seen the night world up close and chosen to fight it rather than join or reject it.

Common Mix-Ups to Watch For

A quick heads-up if you’re researching this character online: because “Anko” is a common word and name in Japanese media, it’s easy to land on mismatched information.

  • Anko Uguisu (Call of the Night) is not the same character as Anko Koshi, a different character with a similar first name from the unrelated manga/anime My Deer Friend Nokotan — some fan sites and auto-generated pages mix up bios between the two.
  • She’s also unrelated to Anko Mitarashi from Naruto, a much more widely known character who shares only the first name.
  • If a source describes Anko Uguisu as a high school student with an unrelated club membership, that’s very likely a mixed-up bio from a different character — her identity in Call of the Night is specifically the vampire-hunting detective described above.

Cross-checking against an official source (Viz Media’s release, or the official streaming platform’s character listings) is the safest way to confirm details if you’re citing this character elsewhere.

Key Takeaways

  • Anko Uguisu is introduced roughly a third of the way through Call of the Night’s story, marking a tonal shift from playful to darker and more psychological.
  • She works as a private detective who specialises in vampire cases, driven by a personal history of loss rather than professional duty alone.
  • In the anime, she’s voiced by Miyuki Sawashiro.
  • Her presence pushes protagonist Kou Yamori to question his own path toward becoming a vampire.
  • Call of the Night is based on a manga by Kotoyama, published in English by Viz Media, with the anime available on platforms including HIDIVE and Crunchyroll.

Content Freshness

Streaming availability for anime titles changes fairly often between platforms and regions, and fan-facing character information can drift as new chapters or episodes release. Revisit this piece if Call of the Night gets new content, or if streaming rights change.

Editorial Review

This article should be reviewed by someone familiar with the current Call of the Night manga and anime before publishing, to confirm details remain accurate as the story progresses.

READ MORE: Anko What the Brand Actually Is and Whether It’s Worth Buying

Conclusion

Anko Uguisu isn’t just a new face thrown into Call of the Night’s cast—she’s the character who forces the story to grow up a little, turning Kou’s dreamy, undecided flirtation with vampirism into something with real weight and real risk. Her mix of professional detachment and buried personal history is exactly why she’s stuck with fans well beyond her introduction arc.

FAQs

Who is Anko Uguisu in Call of the Niht?

She’s a private detective who specialises in vampire cases, introduced in the back half of the story, whose pursuit of vampires is driven by personal revenge rather than professional duty alone.

Who voices Anko Uguisu in the anime?

Miyuki Sawashiro voices her in the Call of the Night anime.

Is Anko Uguisu a villain?

Not exactly. She’s better described as morally ambiguous — her methods can be harsh, but the story frames her as someone shaped by past trauma rather than a straightforward antagonist.

When does Anko Uguisu first appear?

She’s introduced around the manga’s mid-30s chapter range, corresponding to the anime’s later episodes, well after the core Kou-and-Nazuna dynamic is established.

Where can I watch Call of the Night?

The anime has streamed on platforms including HIDIVE and Crunchyroll; availability can vary by region, so check your own streaming service’s current library.

No—they’re unrelated characters from two different, unconnected series that happen to share a similar first name, which causes some mix-ups online. anko uguisu.

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