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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 — Investigation still ongoing
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 DetailsKaren Suzuki Murdered by Shogo Nishimitsu, Osaka, Japan
On May 16, 2024, Karen Suzuki, a 19-year-old university student living in Osaka, was fatally stabbed by her boyfriend Shogo Nishimitsu, who confessed to the murder. Nishimitsu had lied about his employment status and concealed …
State/Province: Osaka, Japan | City/Region: Osaka | Incident Type: Domestic Violence Homicide | Date: May 16, 2024
View DetailsMr. Takahashi and Ms. Kim Allegedly Murdered by Morales and Delacruz, Sumicho 3-chome, Tokyo, Japan
In January 2024, a married couple, Mr. Takahashi and Ms. Kim, went missing from their Tokyo home. Initially, police did not act urgently despite bloodstains reported by their son. Two days later, the couple's bodies …
State/Province: Tokyo, Japan | City/Region: Sumicho 3-chome | Incident Type: Domestic Violence Homicide | Date: Jan. 16, 2024
View DetailsA-ko Disappearance Involving Tsuchiya, Numazu, Shizuoka, Japan
In 2023, A-ko, a 33-year-old divorced single mother and insurance saleswoman from Iwata City, Shizuoka Prefecture, disappeared after dropping her children at daycare. Investigations led to Tsuchiya, a 31-year-old married office worker from Numazu City, …
State/Province: Shizuoka, Japan | City/Region: Numazu | Incident Type: Murder | Date: Feb. 21, 2023
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 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 DetailsSayaka Kuromitsu Allegedly Murdered by Boyfriend, Kure City, Hiroshima, Japan
On New Year's Eve 2013, Sayaka Kuromitsu, a 23-year-old circulatory nurse living in a women-only dormitory in Kure City, Hiroshima Prefecture, was found collapsed on the dormitory stairs and later confirmed dead. The incident occurred …
State/Province: Hiroshima, Japan | City/Region: Kure City | Incident Type: Murder | Date: Dec. 31, 2013
View DetailsKumiko Arai Allegedly Murdered by Matsuo and Ms. A, Akatsuka, Tokyo, Japan
In 2012, Kumiko Arai, a 34-year-old housewife in Tokyo, was found stabbed to death in her apartment after a break-in. The perpetrator, Matsuo, a nearby resident with a history of theft and financial struggles, broke …
State/Province: Tokyo, Japan | City/Region: Akatsuka | Incident Type: Murder | Date: Nov. 21, 2012
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