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Japan
Country Intelligence Summary
49
Dec. 31, 2025
Top Motives and Outcomes in Japan
Top Motives
- Jealousy — 35 case(s)
- Revenge — 21 case(s)
- Control/domination — 17 case(s)
- Eliminate romantic partner — 14 case(s)
- Money / Financial Gain — 12 case(s)
Top Outcomes
- Arrest made — 42 case(s)
- Legal case ongoing — 32 case(s)
- Homicide during marriage — 30 case(s)
- Investigation still ongoing — 26 case(s)
- Deadbody recovery — 16 case(s)
State / Province Case Counts in Japan
9 case(s)
3 case(s)
3 case(s)
3 case(s)
3 case(s)
3 case(s)
2 case(s)
2 case(s)
2 case(s)
1 case(s)
1 case(s)
1 case(s)
1 case(s)
1 case(s)
1 case(s)
1 case(s)
1 case(s)
1 case(s)
Cases in Japan: Outcome — Deadbody recovery
Haruka Komatsumoto Allegedly Murdered by Takumi Ouchi, Mito, Ibaraki, Japan
Haruka Komatsumoto, a pregnant nail technician in Mito, Ibaraki Prefecture, was allegedly murdered by her ex-boyfriend Takumi Ouchi. The case involves stalking, obsessive behavior, and a brutal attack using two weapons—a hammer and a kitchen …
State/Province: Ibaraki, Japan | City/Region: Mito | Incident Type: Murder | Date: Dec. 27, 2025
View DetailsAiri Sato Allegedly Murdered by Kenichi Takano, Takadanobaba, Shinjuku, Tokyo, Japan
On March 11, 2025, at approximately 9:50 a.m., 22-year-old live streamer Airi Sato (broadcaster name 'Kami') was fatally stabbed over 30 times on a street in Takadanobaba, Shinjuku-ku, Tokyo, by 42-year-old viewer Kenichi Takano. Sato …
State/Province: Tokyo, Japan | City/Region: Takadanobaba, Shinjuku | Incident Type: Murder | Date: March 11, 2025
View DetailsHase Allegedly Murdered by Yahara, Kawamura, and others, Ebetsu City, Hokkaido, Japan
In October 2024, 20-year-old university student Hase was found dead in a park in Ebetsu City, Hokkaido, with severe trauma and stripped naked. Six suspects, including Yahara, Hase's girlfriend, and five friends, were arrested after …
State/Province: Hokkaido, Japan | City/Region: Ebetsu City | Incident Type: Murder | Date: Oct. 26, 2024
View DetailsMs. M Disappearance Involving Shota Ozawa, Kofu City, Yamanashi, Japan
In spring 2024, Ms. M, a 40-year-old employee in Kofu City, Yamanashi Prefecture, disappeared after leaving work. Security footage showed colleague Shota Ozawa waiting for her and later interacting with her. Ozawa had stalked Ms. …
State/Province: Yamanashi, Japan | City/Region: Kofu City | Incident Type: Murder | Date: April 30, 2024
View DetailsYutaro Takashima and Nosako Takashima Allegedly Murdered by Wakayama Kito, Kyoko, and others, Tokyo, Japan
In April 2024, two burned bodies of a wealthy couple, Yutaro Takashima and his wife Nosako, were found in the mountains of Nasu Town, Tochigi Prefecture. Wakayama Kito, a former child actor, was arrested as …
State/Province: Tokyo, Japan | City/Region: Tokyo | Incident Type: Murder | Date: April 15, 2024
View DetailsShota Allegedly Murdered by Tatsuya and Misako, Wakayama City, Japan
In Wakayama City, a tragic family incident occurred involving a remarried couple, Tatsuya and Misako, and Misako's son Shota. Tatsuya, who was unemployed and addicted to pachinko, frequently demanded money from Misako and subjected her …
State/Province: None | City/Region: Wakayama City | Incident Type: Family Homicide | Date: Jan. 14, 2023
View DetailsKako Sasaki Allegedly Murdered by Kojiro Yamamoto, Sakai City, Osaka, Japan
On August 26, 2022, Kako Sasaki, a 20-year-old university student in Sakai City, Osaka, was fatally stabbed by her ex-boyfriend Kojiro Yamamoto after a recent breakup. The incident involved domestic violence, jealousy, and a violent …
State/Province: Osaka, Japan | City/Region: Sakai City | Incident Type: Murder | Date: Aug. 26, 2022
View DetailsWano-ka Allegedly Murdered by Shohei Komori and Izumi Komori, Sumida, Tokyo, Japan
In August 2021, 18-year-old high school student Wano-ka from Sumida Ward, Tokyo, went missing after saying she was meeting a friend. Her body was found days later in Yamanashi Prefecture. Shohei Komori, 27, and his …
State/Province: Tokyo, Japan | City/Region: Sumida | Incident Type: Murder | Date: Aug. 28, 2021
View DetailsMizuki Miura, Sogonis Sogonishinaka, and others Disappearance Involving Takahiro Shiraisi, Zama, Kanagawa, Japan
Takahiro Shiraisi, a Japanese man born in 1990, exploited vulnerable individuals with mental health issues via Twitter by pretending to offer help to those contemplating suicide. He lured victims to his apartment in Zama, Kanagawa, …
State/Province: Kanagawa, Japan | City/Region: Zama | Incident Type: Murder | Date: Aug. 22, 2017
View DetailsWatanabe Hiko Disappearance Involving Watanabe, Minami Otokuni Town, Kyoto, Japan
In 2013, Watanabe Hiko, a 37-year-old housewife from Nagaokakyo City, Kyoto Prefecture, disappeared without apparent reason, leaving behind her husband and son. Despite a missing person report filed by her husband, no clues were found …
State/Province: Kyoto, Japan | City/Region: Minami Otokuni Town | Incident Type: Murder | Date: Sept. 6, 2013
View DetailsAsako Kato and R Allegedly Murdered by Tomohito Sugimoto and Noriko Sugimoto, Nagoya, Aichi, Japan
Asako Kato, a 41-year-old female manga café employee in Nagoya, suddenly went missing on April 13, 2012. One year later, her decomposed body was found buried in Minamichita Town, Aichi Prefecture. Tomohito Sugimoto and his …
State/Province: Aichi, Japan | City/Region: Nagoya | Incident Type: Domestic Violence Homicide | Date: April 13, 2012
View DetailsMiharu Yami Disappearance Involving Husband, Tokorozawa, Saitama, Japan
In 2011, Miharu Yami, a 39-year-old housewife from Tokorozawa City, Saitama Prefecture, disappeared after leaving for her part-time job. Despite a report filed by her husband, no trace was found, and the case remained unresolved …
State/Province: Saitama, Japan | City/Region: Tokorozawa | Incident Type: Murder | Date: July 17, 2011
View DetailsMikio Miyazawa, Yasuko Miyazawa, and others Murder Case, Setagaya, Tokyo, Japan
On December 31, 2000, the bodies of Mikio Miyazawa (44), his wife Yasuko (41), their daughter Niina (6), and their son Rei (4) were discovered inside their home in the Setagaya district of Tokyo, Japan. …
State/Province: Tokyo, Japan | City/Region: Setagaya | Incident Type: Family Homicide | Date: Dec. 30, 2000
View DetailsMinoru Ono Allegedly Murdered by Shoko Ono, Sasaki Sakichi, and others, Sapporo, Hokkaido, Japan
Minoru Ono, a 35-year-old self-employed man in Sapporo, was violently assaulted by multiple men in a parking lot near his home on January 9, 1999, after returning home. The attack was orchestrated by his wife, …
State/Province: Hokkaido, Japan | City/Region: Sapporo | Incident Type: Murder | Date: Jan. 9, 1999
View DetailsMasa Matsuda, Mino Matsuda, and others Disappearance Involving Masa Matsuda, Tokyo, Japan
In 1994 Tokyo, Masa Matsuda, a former Sony music executive, disappeared after his wife and daughter were found murdered by strangulation in their apartment. His son was also found dead. Masa was missing initially, leading …
State/Province: None | City/Region: Tokyo | Incident Type: Domestic Violence Homicide | Date: Nov. 10, 1994
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