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Mayu Tomita was attacked in 2016. Photo: Twitter

Stabbed 60 times: Japanese pop idol Mayu Tomita sues police for inaction over obsessed fan, as stalking cases rise in the country

  • Tomita is seeking almost US$700,000 in damages over the 2016 attack, which she says happened because police had failed to take her reports seriously
  • The lawsuit comes as stalking incidents are on the rise in Japan, where the act is viewed as ‘not really a serious crime’, experts say
A former Japanese pop star who was stabbed 60 times by an obsessed fan has sued the Tokyo Metropolitan Police and her management for failing to protect her even after she reported the man’s death threats.

Mayu Tomita was 20 years old when she was attacked by 27-year-old Tomohiro Iwazaki as she walked towards a concert venue in a suburb of Tokyo, where she was due to perform as part of the Sold Girls Night in May 2016.

Tomita, now 23, filed her suit on Wednesday at the Tokyo district court, and told reporters she had been spurred to take action because of the conduct of officers before and after the attack.

“I would like police to realise that if they fail to respond adequately, it could result in something similar to what happened to me,” Tomita told the Asahi newspaper.

When I see a person holding a pen, even if it is a friend or my doctor, I become really nervous because I fear I may be stabbed.
Mayu Tomita

In the months before the attack, Iwazaki sent Tomita books and a wristwatch as gifts, but she returned them. He responded by sending her more than 400 threatening Twitter messages, which Tomita reported to police.

Less than two weeks before the stabbing attack, she shared her safety concerns with police, who did not take any action because, according to Tomita, they regarded Iwazaki as posing no immediate threat to her well-being.

Two days before the concert, she again supplied police with details of her forthcoming performance, but they did not provide any additional security.


During Iwazaki’s trial, witnesses testified he shouted “you should die, die, die” as he stabbed her dozens of times in the chest, neck, arms and back, although his defence team claimed he had no intention of killing her.

He was sentenced to 14 years and six months in prison in February 2017.

Stalker admits stabbing Japanese pop idol Mayu Tomita after his advances were rejected

The attack left Tomita hospitalised for four months and she remains partially blind in her left eye. She has problems eating and singing, and has not regained the full use of the fingers on one hand. She suffers post-traumatic stress disorder and will need further reconstructive surgery.

“When I see a person holding a pen, even if it is a friend or my doctor, I become really nervous because I fear I may be stabbed,” Tomita said. “It is difficult to return to what life was like before the incident.”

According to Tomita, police officers who interviewed her while she was still at hospital questioned if she had genuinely feared “she may be killed” when she first contacted police.


“I absolutely did,” Tomita said.

The conversation with officers is now central to her lawsuit against the police and her management, in which she is seeking damages worth 76 million yen (US$699,000).

Cases like this have become more common in recent years but so have stalking cases involving ordinary people.
Makoto Watanabe, associate professor

Other Japanese stars have also been targeted by assailants. In 2014, two members of the girl band AKB48 were assaulted at a “handshake event”. Rina Kawaei, 19, and Anna Iriyama, 18, sustained broken bones and lacerations in the incident, as did a member of staff, before the assailant was subdued.


Satoru Umeta, 24, was later convicted of attacking the two women with a saw that had been adapted to hold box cutter blades. Umeta’s lawyer claimed his client was showing signs of schizophrenia. The attacker was found guilty and sentenced to six years in prison.

In October 2016, the management of Magical Girl Riripon, an idol who claims to be “eternally 16 years old”, cancelled events and moved her to a safe house after a fan implied on social media he wanted to rape her.

Japanese pop group AKB48 cancels events after saw-wielding man injures two idols and employee

“Cases like this have become more common in recent years but so have stalking cases involving ordinary people,” said Makoto Watanabe, an associate professor of media and communications at Hokkaido Bunkyo University.

“I think that a lot of young people in Japan find it increasingly difficult to control themselves. There is also the sense among many people that stalking is not really a serious crime, both among the public and the authorities,” Watanabe said. “Unfortunately, as we have seen, stalking can become a far more serious crime.”

This attitude may be shifting, at least on the part of the authorities, who in December 2016 passed new laws to address online harassment.

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Japan’s initial legal measures to combat the problem of stalking were introduced in 2000, but only specified loitering around named individuals, making repeated or silent phone calls or sending unsolicited messages by fax.

The law was updated in 2012 to account for advances in technology, with threats sent by email added to the list. Police were also given the power to issue perpetrators with a warning or ban them from certain areas where their victims live or work.
Tomita’s case triggered another update to the legislation, with threats delivered via social media now covered as well.

“Perhaps one reason we are seeing more stalking cases reported in the media is because the police are beginning to change their attitudes and we are seeing this problem treated more seriously,” Watanabe said. “But it will also take a change in attitudes among the public for things to change completely.”

This article appeared in the South China Morning Post print edition as: Pop star stabbed 60 times by fan sues Tokyo police