Sensei! Kuchisake-onna desu!

Sensei! Kuchisake-onna desu!
Japanese先生！口裂け女です！
Directed byYu Nakamoto
Screenplay byYu Nakamoto
StarringTaisei Kido
Reina Kurosaki
Gai Ueno
Hiroko Yashiki
Masanari Wada
Distributed byExtreme
Release date
  • July 7, 2023 (2023-07-07)
Running time
84 minutes
CountryJapan
LanguageJapanese

Sensei! Kuchisake-onna desu! (先生！口裂け女です！; 'Teacher! It's the Kuchisake-onna!') is a 2023 Japanese horror film directed by Yu Nakamoto and starring Taisei Kido.[1][2]

Plot

High school students Takeshi (タケシ; played by Kido Taisei) and F1 (played by Ueno Kai) made money by stealing mopeds and selling them to a gang of delinquents led by Red King (レッドキング, Reddokingu; played by Shima Takeaki). Ayaka (アヤカ; played by Kurosaki Reina), a transfer student from Chiba, joined them, and the three attempted to steal a moped parked at a dilapidated apartment building. However, a masked woman (Yashiki Hiroko), presumably the owner, appeared, and the three were chased by her.[3] The three escaped on a stolen scooter and motorcycle, but the masked woman chased after them at a comparable speed. Takeshi was caught by the masked woman, and when she removed her mask, he saw that her mouth was split in two.

After somehow escaping from the masked woman, the three wondered if she might be the "Kuchisake-onna" (Slit-Mouthed Woman), a legend from the Showa era. Meanwhile, news arrived that a first-year female student had gone missing from her high school, and Takeshi suspected it might be the work of the Slit-Mouthed Woman. Takeshi, accompanied by his sister Kaori (カオリ; played by Ririka), who practices martial arts, and the four of them headed to the apartment building to confront the Slit-Mouthed Woman. The Slit-Mouthed Woman was stronger than Takeshi expected, and he promised her he would return the scooter. He also learned that the Slit-Mouthed Woman wasn't a legendary monster, but that her mouth had been cut off by a past lover who committed domestic violence. Furthermore, the Slit-Mouthed Woman also practiced martial arts and had beaten up her lover. Takeshi became the Slit-Mouthed Woman's apprentice and began learning martial arts from her.

Last night, Takeshi sneaked into the warehouse that served as the Red King's hideout and retrieved the Slit-Mouthed Woman's scooter. However, he was spotted by a gang of delinquents, and the next day, Takeshi was summoned to the warehouse, beaten up, and demanded 500,000 yen. Takeshi tries to steal a large motorcycle to make money, but Ayaka and F1 refuse to help him. He tries to do it alone, but it doesn't work out, and he's discovered and reported. After being lectured by his father and placed under house arrest, Ayaka comes to see Takeshi and tells him that Red King has posted information on social media, complete with a picture, claiming that "Kuchisake-onna" (Slit-Mouthed Woman) is the culprit behind the kidnapping of a high school girl. To clear his name, Takeshi decides to find the real culprit. Takeshi's homeroom teacher, Saito (サイトー; played by Masahiro Wada), used to teach in Chiba when Ayaka lived there, and Ayaka remembers that a similar case of a high school girl going missing had occurred in Chiba as well. Suspicious of Saito, Takeshi tries calling Lisa, who is usually close to Saito and whom Takeshi has feelings for, but Lisa says she went to see a movie with Saito and is currently in Saito's room. Takeshi, Ayaka, and Kaori head to Saito's room.

F1 joins them, and while Saito is out, Takeshi and the others sneak into his room and discover the body of a missing high school girl and Lisa, who has been held captive. Saito returns to his room but flees upon seeing Takeshi and the others. At that moment, Takeshi receives an email from Red King on his smartphone. Takeshi's father had gone to the warehouse to confront Red King but was captured. Takeshi and Ayaka go to the warehouse to rescue their father but are ambushed and captured themselves. Just then, the "Slit-Mouthed Woman," summoned by F1, appears and eliminates Red King and the gang of delinquents. When Takeshi rescues his father, the "Slit-Mouthed Woman" is gone. She had pursued and killed Saito. The "Slit-Mouthed Woman" disappears to an unknown location.

Takeshi starts a part-time job delivering newspapers and decides to live a normal high school life.

Cast and production crew

Cast

Production crew

  • Director/Screenwriter - Yu Nakamoto
  • Action Director - Koji Kawamoto[7]
  • Special Makeup Design/Special Effects Sculpting - Kakusei Fujiwara[8]
  • VFX Supervisor - Makoto Kamiya[8]

Production

In a 2023 interview, Hiroko Yashiki, who played the Kuchisake-onna, stated, "This film serves as my calling card. I don't mind if people associate 'Hiroko Yashiki' with the 'Slit-Mouthed Woman.'"[9]

This film marks the first starring role for Taisei Kido.[8] Reina Kurosaki and Gai Ueno were cast following an audition process.[6]

Regarding the film, director Yu Nakamoto explained, "In an era where anti-lookism is spreading, I wanted to reflect the current zeitgeist by questioning whether it is right to treat someone like a monster simply because their mouth is slit."[10]

Release

The movie was released nationwide in Japan on June 7, 2023.[11]

References

  1. ↑ "先生！口裂け女です！ (2023)：キャスト・あらすじ・作品情報｜シネマトゥデイ" [Teacher! It's the Slit-Mouthed Woman! (2023): Cast, Synopsis, and Film Information | Cinema Today]. シネマトゥデイ (in Japanese). Retrieved 2026-05-23.
  2. ↑ "無敵のヤバい女の武器は鎌！木戸大聖映画初主演作「先生！口裂け女です！」予告＆場面写真公開 : 映画ニュース - 映画.com" [The invincible, terrifying woman's weapon is a scythe! Kido Taisei's first starring film, "Sensei! Kuchisake-onna desu!" Trailer and stills released: Movie News - Eiga.com]. 映画.com (in Japanese). Archived from the original on 2026-03-10. Retrieved 2026-05-23.
  3. 1 2 3 4 "先生！口裂け女です！ | あらすじ・内容・スタッフ・キャスト・配信・作品情報 - 映画ナタリー" [Teacher! It's the Slit-Mouthed Woman! | Synopsis, Content, Staff, Cast, Streaming, and Film Information - Eiga Natalie]. 映画ナタリー (in Japanese). Inc. Natasha. Archived from the original on 2026-01-14. Retrieved 2026-05-23.
  4. 1 2 3 "ジャンル不問の映画『先生！口裂け女です！』 監督が語る"ヤンキーと口裂け女を共演させた理由"" [The director of the genre-defying film "Teacher! It's the Slit-Mouthed Woman!" talks about "the reason for casting a delinquent and the Slit-Mouthed Woman together."]. ビジネスジャーナル/Business Journal | ポジティブ視点の考察で企業活動を応援 企業とともに歩む「共創型メディア」 (in Japanese). Archived from the original on 2025-03-22. Retrieved 2026-05-23.
  5. ↑ 小谷野俊哉. "映画「先生！口裂け女です！」で口裂け女役の屋敷紘子「昔とは違う口裂け女を演じました」 - シネマ : 日刊スポーツ" [Hiroko Yashiki, who plays the Kuchisake-onna (slit-mouthed woman) in the movie "Sensei! Kuchisake-onna desu!", says, "I played a different Kuchisake-onna than before." - Cinema: Nikkan Sports]. nikkansports.com (in Japanese). Archived from the original on 2024-05-07. Retrieved 2026-05-23.
  6. 1 2 "【イベントレポート】「先生！口裂け女です！」木戸大聖が七夕の願い発表、黒崎レイナと上野凱は撮影を述懐（写真11枚）" [[Event Report] "Teacher! It's the Slit-Mouthed Woman!" Taisei Kido announces his Tanabata wish, while Reina Kurosaki and Gai Ueno reminisce about the photoshoot (11 photos)]. 映画ナタリー (in Japanese). Inc. Natasha. Archived from the original on 2024-05-07. Retrieved 2026-05-23.
  7. ↑ "こんな口裂け女見たことない！ ツヨカワ"コワイ"都市伝説ヒロイン爆誕『先生！口裂け女です！』ナカモトユウ監督インタビュー - TOCANA" [I've never seen a Slit-Mouthed Woman like this! A tough, cute, and scary urban legend heroine is born! Interview with director Yu Nakamoto of "Teacher! It's the Slit-Mouthed Woman!" - TOCANA]. TOCANA (in Japanese). Archived from the original on 2026-02-13. Retrieved 2026-05-23.
  8. 1 2 3 "盗んだバイクで走り出したヤンキーを口裂け女が追うホラー公開、主演は木戸大聖（動画あり / コメントあり） - 映画ナタリー" [A horror film about a slit-mouthed woman chasing a delinquent who stole a motorcycle has been released, starring Taisei Kido (video available / comments available) - Eiga Natalie]. 映画ナタリー (in Japanese). Inc. Natasha. Archived from the original on 2025-09-28. Retrieved 2026-05-23.
  9. ↑ "屋敷紘子 令和の「口裂け女」誕生 「やっていて心地よかった」 - スポニチ Sponichi Annex 芸能" [Hiroko Yashiki, the "Slit-Mouthed Woman" of the Reiwa era, says "It felt good to do it" - Sponichi Annex Entertainment]. スポニチ Sponichi Annex (in Japanese). Archived from the original on 2025-08-19. Retrieved 2026-05-23.
  10. ↑ "ナカモト監督＆屋敷紘子が語る異色の映画『先生！口裂け女です！』が生まれた理由" [Director Nakamoto and Hiroko Yashiki discuss the origins of the unconventional film "Sensei! Kuchisake-onna desu!"]. 日刊サイゾー (in Japanese). 2023-06-28. Archived from the original on 2026-03-11. Retrieved 2026-05-23.
  11. ↑ "口裂け女とヤンキーが激突！都市伝説×青春×バトル「先生！口裂け女です！」の予告編" [The Slit-Mouthed Woman and delinquents clash! Trailer for "Teacher! It's the Slit-Mouthed Woman!", a story of urban legend, youth, and battle.]. 映画ナタリー (in Japanese). Inc. Natasha. Archived from the original on 2024-05-07. Retrieved 2026-05-23.
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