Japanese authorities arrested 49-year-old Masae Sakurai on July 6, 2026, following allegations that she used a needle and thread to sew shut the mouth of a 42-year-old woman with whom she cohabitated. According to police reports from Koga City, Ibaraki Prefecture, the victim escaped to a nearby shop to seek help using a handwritten note after being unable to speak.
How did the victim escape the situation?
The victim, who had lived with Sakurai since April 2025, managed to flee the residence while the suspect was away. According to local police investigations, the victim entered a nearby shop and presented staff with a note reading “Please save me.” The shop employees contacted law enforcement immediately. Authorities confirmed that while the victim sustained injuries from the incident, which occurred on June 29, 2026, her life was not in danger.
Local neighbors reported to investigators that they had observed the victim sitting alone outside the residence for extended periods, sometimes from late at night until early morning, for roughly one month leading up to the arrest.
What charges is the suspect facing?
Police arrested Masae Sakurai on charges of assault. Investigators are currently expanding the scope of the case to determine if the situation involved illegal confinement. According to the police, Sakurai described herself as a part-time worker. Authorities are actively working to clarify the relationship between the two women, the motive behind the assault, and whether other individuals residing at the property were involved in or aware of the abuse.

Why were neighbors suspicious of the residence?
While the physical assault shocked the local community, some residents indicated that the home had been a source of concern for some time. Neighbors told reporters that while they rarely interacted with the occupants, they frequently saw various adults entering and leaving the property. One resident noted that there was a lingering feeling that “something would eventually happen” at the address.
Public Reaction and Safety Resources
The incident has drawn significant attention across Japan, with many social media users comparing the severity of the abuse to scenes from horror films. The case remains under active investigation as police process evidence from the Koga City home.

If you or someone you know is experiencing physical or mental abuse, sexual assault, or harassment, seek help immediately. In Japan, you can dial 110 to reach the police or contact the 113 professional counseling line to speak with social workers.
Frequently Asked Questions
What is the current status of the victim?
According to police reports, the victim is safe and does not have life-threatening injuries, though she required medical attention after the assault.
When did the incident take place?
Police records state the assault occurred on June 29, 2026, at approximately 1:30 p.m. at a residence in Koga City.
Are there other suspects?
Police are currently investigating whether other individuals living at the residence were involved or had knowledge of the abuse, but currently, only Masae Sakurai has been arrested.
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