
Police treating attack that left one dead, two injured as premeditated.
At roughly 9:45 on the evening of June 9, while onboard a Shinkansen bullet train running between Tokyo and Osaka, 22-year-old Ichiro Kojima took a knife out of his backpack and began slashing two women, also in their 20s, who were seated near him. Kotaro Umeda, a 38-year-old businessman returning to his home in central Japan following a business trip to Yokohama, bravely came to the women’s defense, allowing them to escape but losing his life as Kojima turned his attacks on him.
Kojima, an unemployed resident of the town of Okazaki in Aichi Prefecture, was subdued and turned over to the Kanagawa Prefectural police after the train arrived at Odawara Station. He currently awaits trial, but further details are emerging as he is questioned by investigators.
Kojima has told the police that he purchased the knife he used in March, and the incident is now being treated as a premeditated crime, though Kojima did not know any of the victims prior to the attack. More disturbing still, though, is that he has also stated that if he is released from prison, he will commit a crime again.
Though Kojima did not explicitly specify that this hypothetical crime would also be a homicide, that very much seems to be the implication, as the Shinkansen stabbing appears to be his only significant run-in with the law. Considering Japanese society’s widespread support of the death penalty, Kojima’s lack of remorse may be a sign that he’s hoping the authorities will end his life for him, though prosecutors have yet to issue a statement as to what sort of punishment they’ll be seeking.
Sources: Livedoor News/TV Asahi News via Hachima Kiko, Nitele News 24 via Hachima Kiko, The Mainichi
Top image: Pakutaso

Japan finalizes life imprisonment sentence for Shinkansen murderer
Foreign man arrested for walking on Shinkansen tracks, claims he was on the run from yakuza
Bullets on the bullet train as three men found carrying guns on Japan’s Shinkansen
Shinkansen makes unscheduled stop as elderly man whacks other passenger in the head with phone
Man dressed as Batman’s Joker commits stabbing/arson attack on Tokyo train on Halloween night
The average age of Japan’s hikikomori shut-ins is getting older, survey shows
Studio Ghibli releases crystal glass paperweights featuring Totoro and the Catbus
Japan’s new Pokémon jackets give you the look and powers of the Kanto starter trio
Samurai Coffee: Try Edo period coffee once enjoyed by Japanese warriors
Sega opening 65th anniversary store in downtotn Tokyo with deep-cut game merch
Japan enters Golden Week vacation period, survey shows one in three plan to ride it out at home
Studio Ghibli releases new anime keychains that are like miniature figurines
Viral tweet suggests Japanese convenience store ripping off customers with donuts, so we investigate
Lipton releases… Pudding Milk Tea in Japan?!?
Retro-style Evangelion T-shirts coming to Uniqlo sister brand GU[Photos]
Brand-new Square Enix Cafe to open in Tokyo…and in Los Angeles too!
New Kyoto Converse sneakers celebrate Japan with traditional kimono fabrics for your feet
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
Hello Kitty is now a transforming truck robot[Photos]
Dorayaki from 89-year-old Japanese confectionery shop is one of the best sweets hidden in Tokyo
What are the worst things about living in the Japanese countryside?[Survey]
Tifa’s Final Fantasy VII bar is going to pop up in real-world Tokyo
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Wisteria season starts early with blooming of Japan’s Great Wisteria in its beautiful garden
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Japan’s best conveyor belt sushi restaurant of seven years ago has now, finally, come to Tokyo
Brand-new Pokémon manhole covers coming to help the recovery of a disaster-stricken part of Japan
Japan’s awesomely beautiful Alpen Route snow corridor is now open
Injuries on stairs in Tokyo highlight an overlooked design flaw
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Okayama police academy instructor stabs recruit in chest during training
Woman stabbed to death on Tokyo street while live streaming
Parakeet found riding Shinkansen by itself, gets taken into police custody【Video】
Arson attempt by passenger on Japan’s Shinkansen shuts down bullet train line
A close encounter with a dangerous criminal on a Shinkansen bullet train in Japan
Shinkansen conductor caught playing GPS smartphone game on bullet train…for TEN years
Is the Shinkansen bullet train Green Car upgrade worth it when traveling in Japan?【Photos】
Japanese government to outlaw carrying unbound knives on trains starting next year
Yamagata police tell residents not to worry about knife-wielding man roaming the streets
18-year-old man stabbed to death for protesting a car blasting loud music in Kamakura
Police in Japan warn of new Shinkansen/travel-related scam
Nerd crime: N00b online gamer stabbed in real life by L337 Hackz0r
Suspects arrested for 100-million yen Kyoto home invasion robbery after eight-year search
Japanese police officer admits he was looking at porn on his phone while suspect escaped lockup
Tokyo police arrest teen for having knife 2mm too long, released because type of knife mistaken
Tokyo acid attack suspect caught in Okinawa, was victim’s senpai in university club