Women pray for the victims near the site of a knife attack in Kawasaki, near Tokyo Wednesday, May 29, 2019. A man carrying a knife in each hand attacked a group of schoolgirls waiting at a bus stop just outside Tokyo Tuesday. (Photo by Hiroki Yamauchi/Kyodo News via AP Photo)





A sumo wrestler arrives at the national sumo stadium Sunday, May 26, 2019, in Tokyo, where U.S. President Donald Trump is scheduled to visit. (Photo by Jae C. Hong/AP Photo)





In this September 2, 2010, file photo, fishermen drive bottle-nose dolphins into a net during their annual hunt off Taiji, Wakayama Prefecture, Japan. A court in central Japan on Friday, May 17, 2019 is hearing arguments over whether dolphin hunting violates the nation's animal cruelty laws. (Photo by Kyodo News via AP Photo/File)





A visitor walks through the artwork “Entre-temps” by French artist Christian Boltanski during the press preview of the “Christian Boltanski – Lifetime” exhibition at the National Art Center in Tokyo, Japan, 11 June 2019. The exhibition presents almost 50 artworks by the artist and will be open to the public from 12 June to 02 September 2019. (Photo by Franck Robichon/EPA/EFE)





Participants pose showing traditional Japanese tattoos during the annual Sanja Matsuri festival in Tokyo's Asakusa district, Japan, 19 May 2019. Around two million people gathered in Asakusa streets during the three-day spring festival, one of Japan's biggest festivals. (Photo by Franck Robichon/EPA/EFE)





A large crowd passes a pedestrian crossing as a commuter train travels overhead Monday, May 27, 2019, in the Shinjuku district of Tokyo. (Photo by Jae C. Hong/AP Photo)





People cross a street in Tokyo's Ginza district on May 9, 2019. (Photo by Charly Triballeau/AFP Photo)





Tourists take photographs as a wild sika deer eats a bag on June 6, 2019 in Nara, Japan. Nara's free-roaming deer have become a huge attraction for tourists. However, an autopsy on a deer that was recently found dead near one of the city's famous temples discovered 3.2kg of plastic in its stomach and caused concern at the effect of tourism as Japan struggles to cope with a huge increase in domestic and international tourists. Alongside a growing Japanese tendency to holiday domestically, a record 31 million people visited the country in 2018 up 8.7 percent from the previous year, with many people now worrying about the environmental impact caused by such large visitor numbers. (Photo by Carl Court/Getty Images)





College students work out at the sumo wrestling club at Nippon Sports Science University in Tokyo, Japan on May 22, 2019. (Photo by Issei Kato/Reuters)





U.S. President Donald Trump, first lady Melania Trump, Japanese Prime Minister Shinzo Abe and wife Akie Abe watch the Summer Grand Sumo Tournament at Ryogoku Kokigikan Sumo Hall in Tokyo, Japan May 26, 2019. (Photo by Jonathan Ernst/Reuters)





A taxi passes the famous Shibuya crossing Thursday, June 13, 2019, in Tokyo. It's not just a crossing. Located just outside Shibuya Station, the scramble crossing is one of the top tourist attractions in Japan. It's so famous that there's an observation deck on the rooftop of a building built to watch the crossing. During rush hour, an estimated 1000 to 2500 people cross the intersection during each traffic light change. (Photo by Jae C. Hong/AP Photo)





Children perform a traditional dance for U.S. first lady Melania Trump and Japanese Prime Minister Shinzo Abe's wife Akie Abe, both not pictured, during a cultural event at the Japanese style annex inside the State Guest House in Tokyo Monday, May 27, 2019. (Photo by Tomohiro Ohsumi/Pool Photo via AP Photo)





Commuters wait to get on a train at a station Wednesday, May 22, 2019, in Tokyo. A police-developed smartphone app with anti-s*x crime alarms has won massive subscriptions as Japanese women try to arm themselves against gropers on packed rush-hour trains. (Photo by Eugene Hoshiko/AP Photo)





Japanese traditional female entertainers, or geisha, from Shimbashi area greet toward spectator seats during a run-through before their actual show of “Azumaodori” at Shimbashi Enbujo Theater Wednesday, May 22, 2019, in Tokyo. (Photo by Eugene Hoshiko/AP Photo)





Visitors take a selfie with a panel with “Good-bye Heisei” written in Japanese at Fukuoka Tower in Fukuoka, southwestern Japan, Tuesday, April 30, 2019. Japan's Emperor Akihito is set to abdicate later in the day as Japan embraces the end of his reign with an emotion mixed with reminiscence and hopes for a new era. (Photo by Miyuki Saito/Kyodo News via AP Photo)





A racer crushes during ISU-1 Hanyu Grand Prix, while taking part in the office chair race ISU-1 Grand Prix series, in Hanyu, north of Tokyo, Japan, June 9, 2019. (Photo by Issei Kato/Reuters)





Shoppers with umbrellas walk along the Takeshita Street Friday, June 7, 2019, in the Harajuku district of Tokyo. Harajuku is one of the most popular shopping neighborhoods in Tokyo. (Photo by Jae C. Hong/AP Photo)





Local people pull a Danjiri along the street to celebrate the of start Japan’s new imperial era Reiwa on May 01, 2019 in Kobe, Japan. About 45 Danjiri, large wooden carts in the shape of a shrine or temple, are carried by local people around the city to welcome the new era of Reiwa. (Photo by Buddhika Weerasinghe/Getty Images)





Visitors stroll through a carpet of moss flowers, called shibazakura in Japanese, in full bloom at Shibazakura Park in the Hokkaido town of Ozora on May 19, 2019. (Photo by Kyodo News via Getty Images)





In this panned photo, Tokyo's skyline is seen at dusk from the Roppongi Hills Mori Tower Monday, June 17, 2019, in Tokyo. (Photo by Jae C. Hong/AP Photo)





Water are discharged during a biannual fire exercise at Kayabuki no Sato, thatched roof farmhouses on May 20, 2019 in Nantan, Kyoto, Japan. (Photo by The Asahi Shimbun via Getty Images)