Rika - Jisho 28 Sai no Junai Monster (2021)
A Japanese crime thriller in which a detective hunting a kidnapper goes undercover on a dating app — and finds himself dangerously close to his target.
Rika - Jisho 28 Sai no Junai Monster - Movie Information
- Original Title: リカ ～自称28歳の純愛モンスター～
- Release Year: 2021
- Directed by: Tsukuru Matsuki
- Type: Movie
- Genres: Crime
- Runtime: 1h 39m
- Original Language: Japanese
- Spoken Languages: Japanese
- Release Date (Theatrical): June 18, 2021 (Japan)
- Alternative Titles: リカ 自称28歳の純愛モンスター (JP), Rika: Self-Proclaimed 28 Years Old's Pure Love Monster (US), 觸目驚心的純真 劇場版 (TW)
- Production Companies: Happinet Phantom Studios
- Production Countries: Japan
Rika - Jisho 28 Sai no Junai Monster - Plot
A dead body in a suitcase is found on a mountain. The body is identified as Takao Honma. 3 years ago, he was kidnapped by Rika Amamiya and went missing. Detective Jiro Okuyama tries to catch Rika Amamiya. He uses a dating app, while using a fake name, and finally finds Rika Amamiya, but he becomes attracted to Rika Amamiya.
Rika - Jisho 28 Sai no Junai Monster - Trailer
Watch the official trailer and see the obsession unfold:
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Rika - Jisho 28 Sai no Junai Monster - Cast & Crew
Director(s)
- Tsukuru Matsuki
Main Cast
- Saki Takaoka
- Hayato Ichihara
- Rio Uchida
- Nozomi Sasaki
- Toshinori Omi
- Magi
- Kenji Mizuhashi
- Ryutaro Okada
- Naohiro Yamamoto
Writers
- Kisa Miura
Producers
- Miwako Kurihara
- SUGIMOTO Yusuke
Rika - Jisho 28 Sai no Junai Monster - FAQs
Who plays Rika Amamiya in this film?
Saki Takaoka takes on the role of Rika Amamiya, the self-proclaimed 28-year-old at the center of the story. Her portrayal of the obsessive and dangerous kidnapper is the film's most talked-about element, drawing on her considerable dramatic range to create a truly unsettling character.
What is Rika - Jisho 28 Sai no Junai Monster about?
When a body is discovered in a suitcase on a mountain, detective Jiro Okuyama traces the case back to a woman named Rika Amamiya, who kidnapped the victim three years earlier. Going undercover on a dating app, Okuyama tracks her down — only to find himself unexpectedly drawn to her.
Is Rika Amamiya based on a real person?
Yes — Rika Amamiya is inspired by a real Japanese woman whose case attracted significant media attention. The character originated in a series of Japanese novels and was adapted into various TV dramas before this theatrical film, with the story rooted in real-life obsessive stalking and violent crime cases that shocked Japan.
When was this film released in Japan?
Rika - Jisho 28 Sai no Junai Monster opened in Japanese theaters on June 18, 2021. It was produced by Happinet Phantom Studios and directed by Tsukuru Matsuki, serving as a theatrical continuation of the Rika franchise that had previously appeared as a television drama series.
How long is Rika - Jisho 28 Sai no Junai Monster?
The film runs for 99 minutes — just under an hour and forty minutes. That's a tight, focused runtime that keeps the tension moving without overstaying its welcome, making it a solid single-sitting watch for fans of Japanese crime thrillers.
Is this film connected to a TV drama series?
Yes, the film is part of the broader Rika franchise. The character of Rika Amamiya first appeared in Japanese TV drama adaptations before this theatrical release. The franchise is based on a series of novels, and the theatrical film expands on the same story world, making it both a standalone thriller and a continuation for existing fans.
Who directed Rika - Jisho 28 Sai no Junai Monster?
Tsukuru Matsuki directed the film. He helmed this theatrical entry in the Rika franchise, working from a screenplay by Kisa Miura. The production was handled by Happinet Phantom Studios, a Japanese entertainment company known for genre and cult-oriented film releases.
What are some similar films to watch?
If you enjoy this film, you might also like Oh Mercy (2019), The Beast (2019), Next Time I'll Aim for the Heart (2014), Lover, Stalker, Killer (2024), and I'm Not a Killer (2019). These titles share similar themes of obsession, crime investigation, and the unsettling psychology of dangerous individuals.
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