From DramaWiki

For the Taiwanese drama with the same English title, see Unknown (Youku).


  • Title: unknown / アンノウン
  • Format: Renzoku
  • Genre: Romance, Suspense
  • Episodes: 10
  • Viewership ratings: 6.2%
  • Broadcast network: TV Asahi
  • Broadcast period: 2023-Apr-18 to 2023-Jun-20
  • Air time: Tuesday 21:00
  • Theme song: KANASHIBARI feat. ao by RADWIMPS


Yamihara Kokoro and Asada Toramatsu live in a town that is quite peaceful, until a serial murder case happened where the bodies all had their blood drained out. Five years have passed but the case remains unsolved. Meanwhile, Kokoro and Toramatsu have been in a relationship for a year, but are unable to get married as they are keeping a serious secret from each other. Kokoro is actually a vampire. However, she does not attack humans and live modestly. Toramatsu is a popular resident in the town and is trusted by many. After getting a divorce, Toramatsu got drunk and went back to his old house, where he met Kokoro, the current occupant. As the two continue to keep their secrets hidden, a horrific murder occurs once again in the town.

User/Viewer Ratings

(0 votes)


Main Cast
Yamihara Family
Magazine "Shuukan Neppa"
Haruhi-cho Shopping District
  • Kote Shinya as Yoyozuka Yukio (50 / Policeman)
  • First Summer Uika as Igarashi Matsuri (38 / "Wasshoi Cleaning" owner)
  • Sota Ryosuke as Igarashi Daigoro (18 / Matsuri's son)
  • Sakou Yoshi as Niwatsuki Genji (60 / Izakaya "Donzoko" owner)
  • Osada Seiya as Niwatsuki Seiya (33 / Genji's son)
  • Kino Hana as Imafuku Ume (75 / Japanese confectionary store "Umeboshido" owner)
HQ Investigation 1st Division

Production Credits

External Links

Winter 2023 TV Asahi Summer 2023
Hoshi Furu Yoru ni Tuesday 21:00 Shikkou!!