In this Saturday, January 21, 2017 photo, half-naked shrine parishioners using wooden pots throw cold water on themselves during the annual cold-endurance festival at the Kanda Myojin Shinto shrine in Tokyo. Pouring cold water on their bodies is believed to purify their souls. (Photo by Eugene Hoshiko/AP Photo)





People bow during a purification ceremony as they offer prayers at the start of the new business year at Kanda Myojin Shrine, which is known to be frequented by worshippers seeking good luck and prosperous businesses, in Tokyo, Japan, January 4, 2017. (Photo by Toru Hanai/Reuters)





People offer prayers on the first business day of the year at the Kanda Myojin shrine, which is known to be frequented by worshippers seeking good luck and prosperous businesses, in Tokyo, Japan, January 4, 2017. (Photo by Toru Hanai/Reuters)





People receives a sacred sake from Shinto maidens as a ritual after a ceremony for companies wishing for prosperous business at the start of the new business year at Kanda Myojin Shrine, which is known to be frequented by worshippers seeking good luck and prosperous businesses. in Tokyo, Japan, January 4, 2017. (Photo by Toru Hanai/Reuters)





People offer prayers on the first business day of the year at the Kanda Myojin shrine, which is known to be frequented by worshippers seeking good luck and prosperous businesses, in Tokyo, Japan, January 4, 2017. (Photo by Toru Hanai/Reuters)





Shinto maidens tinkle bells during a ceremony for companies wishing for prosperous business in front of an altar at the start of the new business year at Kanda Myojin Shrine, which is known to be frequented by worshippers seeking good luck and prosperous businesses, in Tokyo, Japan, January 4, 2017. (Photo by Toru Hanai/Reuters)





Mongolian-born grand sumo champion Yokozuna Harumafuji (R) performs the New Year's ring-entering rite at the annual celebration for the New Year at Meiji Shrine in Tokyo, Japan January 6, 2017. (Photo by Issei Kato/Reuters)





Mongolian-born grand sumo champion Yokozuna Harumafuji (R) arrives for performing the New Year's ring-entering rite at the annual celebration for the New Year at Meiji Shrine in Tokyo, Japan, January 6, 2017. (Photo by Issei Kato/Reuters)





Mongolian-born grand sumo champion Yokozuna Kakuryu (2nd L) arrives for performing the New Year's ring-entering rite at the annual celebration for the New Year at Meiji Shrine in Tokyo, Japan January 6, 2017. (Photo by Issei Kato/Reuters)





Newly promoted sumo grand champion, or yokozuna, Kisenosato (R), wearing a ceremonial belly band, performs a sacred ring-entering ritual at Meiji Shrine in Tokyo, Japan, in this photo taken by Kyodo Japan, January 27, 2017. (Photo by Reuters/Kyodo News)





A woman walks in front of jewelry stores at a shopping district in Tokyo, Japan, January 10, 2017. (Photo by Toru Hanai/Reuters)





A man clears snow at a parking lot in Gosen, Niigata Prefecture, Japan, in this photo taken by Kyodo January 13, 2017. (Photo by Reuters/Kyodo News)





Students make their way in the snow as they head to National Center Test for University Admissions in Nagoya, Aichi prefecture, Japan, in this photo taken by Kyodo January 14, 2017. (Photo by Reuters/Kyodo News)





Hikone Castle is seen in the snow in Hikone, in Shiga Prefecture, Japan, in this photo taken by Kyodo January 14, 2017. (Photo by Reuters/Kyodo News)





A woman in traditional dress (C) walks in the heavy snow at Sanjusangendo temple in Kyoto, western Japan, in this photo taken by Kyodo January 15, 2017. (Photo by Reuters/Kyodo News)





Guests look at Panasonic's prototype delivery robot, HOSPI, designed to serve bottled beverages and provide bus information, at a hotel near Narita International Airport in Narita, Japan January 17, 2017. (Photo by Toru Hanai/Reuters)





People are seen at a market street in Tokyo, Japan, January 23, 2017. Picture taken on January 23, 2017. (Photo by Kim Kyung-Hoon/Reuters)





An event employee of Nintendo attends the presentation ceremony of its new game console Switch in Tokyo, Japan January 13, 2017. (Photo by Kim Kyung-Hoon/Reuters)





The interior of ZMP's RoboCar is pictured during its demonstration in Tokyo, Japan, January 31, 2017. (Photo by Kim Kyung-Hoon/Reuters)





A man walks past a shop selling masks of U.S. President Donald Trump (L top) and Japanese Prime Minister Shinzo Abe at a market street in Tokyo, Japan January 23, 2017. (Photo by Kim Kyung-Hoon/Reuters)





Cabins are seen inside “Book And Bed”, a bookshop-themed capsule hotel, in Tokyo, Japan January 19, 2017. (Photo by Toru Hanai/Reuters)





Cabins are seen inside “Book And Bed”, a bookshop-themed capsule hotel, in Tokyo, Japan January 19, 2017. (Photo by Toru Hanai/Reuters)





A woman touches Toyota's vehicle decorated as shape of dog at its headquarters in Tokyo, Japan, February 6, 2017. (Photo by Kim Kyung-Hoon/Reuters)





20-year-old women visit the the Meiji shrine in Tokyo, Japan to celebrate Japan's Coming of Age Day on January 6, 2017. (Photo by Aflo/Rex Features/Shutterstock)