, also known as , is a Japanese police procedural television series starring Kentaro Sakaguchi, Michiko Kichise and Kazuki Kitamura. It is a remake of the South Korean drama of the same name written by Kim Eun-hee and aired every Tuesday at 21:00 JST from April 10 to June 12, 2018, on Fuji TV.
A sequel film, Signal the Movie, was released in theaters in Japan on April 2, 2021.
Cast Main Kentaro Sakaguchi as Kento Saegusa Michiko Kichise as Misaki Sakurai Kazuki Kitamura as Takeshi Ooyama
Supporting *Atsuro Watabe as Tsutomu Yamada Yuichi Kimura as Tsutomu Yamada Tetsuhiro Ikeda as Shinya Kojima Masahiro Komoto as Kazuo Iwata Kaede Aono as Rika Anzai Fuju Kamio as Ryota Kato Yuito Obara as Yōichi Ogawa
Original soundtrack Boy group BTS from South Korea sang the opening theme song of the series entitled "Don't Leave Me".
Title Year Artist Peak chart positions SalesKOR*FRA Digital JPNUS World* OriconHot 100"Don't Leave Me"2018BTS—9118131 JPN: 4,611 US: 9,000 "—" denotes releases that did not chart or were not released in that region.
Ratings Broadcast dateAverage audience shareKanto regionKansai region Ref. 1 April 10, 2018 9.7% 12.9%坂口健太郎主演「シグナル 長期未解決事件捜査班」初回視聴率は関東9・7% 関西は12・9%で2ケタ発進 2 April 17, 2018 8.4% 14.3%坂口健太郎主演「シグナル」第2話視聴率は関東8・4%、関西は14・3%の高数字 3 April 24, 2018 8.3% 11.9% 4 May 1, 2018 7.9% 13.0% 5 May 8, 2018 6.7% 11.6% 6 May 15, 2018 5.7% 9.7% 7 May 22, 2018 6.9% 10.1% 8 May 29, 2018 6.9% 10.3% 9 June 5, 2018 7.3% 11.4%10 June 12, 2018 9.2% 13.5% Average 7.7% 11.9%
International broadcast Country Network Premiere Indonesia Mongolia Myanmar Singapore Sri Lanka Taiwan Vietnam WakuWaku Japan(with subtitles) April 21, 2018
Film
A sequel film, simply titled Signal the Movie, was released in Japan on April 2, 2021. The film was directed by , co-written by Kōsuke Nishi and Hiroshi Hayashi, and distributed by Toho, with cast members from the television series reprising their respective roles.
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