Home → Japan
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: Motive — Revenge
Haruka Komatsumoto Murder Case, Shika, Ibaraki, Japan
On December 31, 2025, Haruka Komatsumoto, a 31-year-old pregnant manicurist, was found stabbed and beaten in her apartment in Shika, Ibaraki Prefecture. Her husband discovered her bleeding at the entrance. The police found no signs …
State/Province: Ibaraki, Japan | City/Region: Shika | Incident Type: Murder | Date: Dec. 31, 2025
View DetailsHaruka 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 DetailsDonna Nelson Allegedly Murdered by Kelly, Tokyo, Japan
Donna Nelson, a grandmother from Perth, was arrested in January 2023 at Tokyo's Narita airport carrying nearly 2 kg of methamphetamine. She was deceived in a prolonged romance scam by a man named Kelly, who …
State/Province: None | City/Region: Tokyo | Incident Type: Non-Murder | Date: Jan. 4, 2023
View DetailsYoko Yoshida Injured in Alleged Murder Attempt by Keisuke Yoshida, Nishigome, Tokyo, Japan
On January 16, 2022, Yoko Yoshida was found unconscious at home and later died in hospital. Initially thought to be natural causes, an autopsy revealed lethal methanol poisoning. The investigation pointed to her husband, Keisuke …
State/Province: Tokyo, Japan | City/Region: Nishigome | Incident Type: Attempted Murder | Date: Jan. 16, 2022
View DetailsToshio Ohashi and Yoshito Ohashi Allegedly Murdered by Toshiko Ohashi, Asahi, Chiba, Japan
In November 2021, a fire in a detached house in Asahi, Chiba Prefecture, resulted in the deaths of Toshio Ohashi, a paralyzed husband, and his severely disabled son Yoshito. The wife, Toshiko Ohashi, escaped and …
State/Province: Chiba, Japan | City/Region: Asahi | Incident Type: Domestic Violence Homicide | Date: Nov. 17, 2021
View DetailsInoue, Inoue's father, and others Murdered by Endo Ki, Chuo City, Yamanashi, Japan
Endo Ki, a juvenile from Chuo City, Yamanashi Prefecture, developed an obsessive one-sided love for a female classmate, Inoue, which escalated into stalking and ultimately a violent arson-murder attack on her family. After being rejected …
State/Province: Yamanashi, Japan | City/Region: Chuo City | Incident Type: Domestic Violence Homicide | Date: Oct. 12, 2021
View DetailsHusband Injured in Murder Attempt by Konishi Kota, Sakai Ryota, and others, Adachi, Tokyo, Japan
In August 2021, in Adachi, Tokyo, a wife named Takita allegedly hired a hitman through social media to murder her husband due to financial debts exceeding 10 million yen and deteriorating marital relations. The husband …
State/Province: Tokyo, Japan | City/Region: Adachi | Incident Type: Attempted Murder | Date: Aug. 7, 2021
View DetailsTsuyoshi Furukawa Allegedly Murdered by Chiharu Sato and Mr. A, Kyoto City, Kyoto, Japan
In 2021, Tsuyoshi Furukawa, a renowned traditional craftsman in Kyoto, was found dead with multiple stab wounds and an arrow in his back at a love hotel. The suspect, Chiharu Sato, his disciple and involved …
State/Province: Kyoto, Japan | City/Region: Kyoto City | Incident Type: Murder | Date: July 9, 2021
View DetailsRina Ono Disappearance Involving Akira Ono, Inzai City, Chiba, Japan
In 2020, Rina Ono, a 32-year-old woman living in Inzai City, Chiba Prefecture, disappeared after separating from her husband Akira Ono. Her car was found in Narita City, but her body was never recovered. Akira …
State/Province: Chiba, Japan | City/Region: Inzai City | Incident Type: Murder | Date: March 6, 2020
View DetailsHusband, Mother-in-law, and others Allegedly Murdered by Masako Kishimoto, Tsuruga, Fukui, Japan
On November 17, 2019, in Tsuruga, Fukui Prefecture, Masako Kishimoto, aged 72, allegedly murdered her 95-year-old mother-in-law, 93-year-old father-in-law, and 70-year-old husband in their shared home. The killings were reportedly motivated by extreme caregiving fatigue, …
State/Province: Fukui, Japan | City/Region: Tsuruga | Incident Type: Family Homicide | Date: Nov. 17, 2019
View DetailsKoji Kobayashi Allegedly Murdered by Yuichi Amano, Kyoto City, Kyoto, Japan
On September 21, 2012, Koji Kobayashi, a 36-year-old staff member at Doshisha Women's College in Kyoto, was fatally stabbed near his home. The perpetrator, Yuichi Amano, a senior colleague and former Ministry of Education official, …
State/Province: Kyoto, Japan | City/Region: Kyoto City | Incident Type: Murder | Date: Sept. 21, 2012
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 Details