
Alternate plan was to just burn them alive.
Matthew C. Perry played arguably the largest single role in ending Japan’s centuries of isolation from the rest of the world. When the U.S. commodore’s expedition arrived in Tokyo Bay in 1853, Japan had spent more than 200 years under government policies that almost entirely forbade any sort of contact with other nations, and upon his return to Japan a year later Perry and shogunate officials signed the Convention of Kanagawa, the treaty which led to the opening of Japan.
Of course, you can’t influence the abolishment of a government policy that’s been in place for so long without earning the ire of some powerful people, and recently discovered historical documents show just how displeased one samurai lord was with Perry’s presence in Japan, and even his continued existence on the planet.
Researchers recently discovered a set of 16 letters written by Tokugawa Noriaki, the daimyo of Mito Province (present-day Ibaraki Prefecture) and father of Tokugawa Yoshinobu, Japan’s final shogun. Noriaki’s letters, written between 1853 and 1855, were sent to his retainer Fujita Toko, a samurai scholar who advocated for the restoration of the emperor as the ruling figure of Japan and the expulsion of foreigners from the country.
The letters discuss specific methods for assassinating the U.S. envoys to Japan, with one section preceded by the heading “Burning the Foreigners to Death” and expanding on the subject with “If we can get them into a mansion that we’ve set up properly, we’d be able to burn them all to death at once, right?”
Another plot outlined in the letters: “Make sure their senior officers drink a lot of sake in the great hall of Edo Castle, then lop of their heads…then notify our men near Shinagawa and have them get rid of everything in their ships.”
▼ This would have trumped every “Dude, I felt so messed up after I got wasted on sake on my Tokyo trip” experience unaccustomed foreign visitors have ever told.
The letters were found in the preserved home a salt merchant in Kurashiki, Okayama Prefecture, among a collection of roughly 10,000 historical documents.
It’s worth noting that though he was the father of Japan’s last shogun, Noriaki himself never held the position and was a prominent pro-emperor figure. Though tasked for a time with advising the shogunate on matters of coastal defense, during which he was an open advocate for strengthening Japan’s military so that it could fight against foreign forces, he was also imprisoned for beefing up his personal domain’s military might against the wishes of the shogunate. As such, his personal plotting may not necessarily have aligned with the exact desires of Japan’s official government at the time.
Source: Yomiuri Shimbun via Livedoor News via Jin, Britannica
Top image: Wikipedia/GooGooDoll2, Wikipedia/Centpacrr (edited by SoraNews24)
Insert image: Pakutso
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!
Follow Casey on Twitter, where he’s glad none of his sake sessions have ended with beheadings so far.


Sword of one of Japan’s last samurai discovered in house in America
Edo-Period Japanese book depicts U.S. history in hilariously awesome illustrations
Samurai chick pudding cake is Japan’s newest hard-to-buy, delicious-to-eat treat【Taste test】
Japanese bento serves up a slice of the samurai life in a special carry case
Kyoto samurai house wants to share its history of seppuku, torture and gold coins with visitors
Take a trip to Japan’s Dododo Land, the most irritating place on Earth
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Can you eat lunch in Tokyo for less than 500 yen?
Super-salty pizza sends six kids to the hospital in Japan, linguistics blamed
Starbucks Japan unveils new sakura Frappuccino for cherry blossom season 2026
Foreigners accounting for over 80 percent of off-course skiers needing rescue in Japan’s Hokkaido
Asakusa’s Yoi no Yoi bar crawl is one of Tokyo’s best local nights out
Real-world Nausicaa Ghibli anime glider completes its final flight in Japan【Video】
Adult entertainment guidance center in Tokyo also serves up great curry【Taste test】
Japan has omurice chocolate, and the weirdest thing isn’t how it tastes
Japan’s newest Shinkansen has no seats…or passengers [Video]
Is China’s don’t-go-to-Japan warning affecting the lines at a popular Tokyo gyukatsu restaurant?
Three beautiful places to see Japan’s plum blossoms after starting your day in downtown Tokyo
Downloads of 39-year-old Guns N’ Roses song increase 12,166 percent thanks to Gundam
A look back on 40 years of Japanese schools banning stuff
New Family Mart cinema opens inside Japanese airport
Man arrested in Japan after leaving car in coin parking lot for six years, racking up three-million-yen bill
Huge Evangelion Unit-01 head appearing in lights in Japan to celebrate anime’s 30th anniversary
Starbucks Japan releases new drinkware and goods for Valentine’s Day
Japan releases first official sakura cherry blossom forecast for 2026
Archfiend Hello Kitty appears as Sanrio launches new team-up with Yu-Gi-Oh【Pics】
China’s don’t-go-to-Japan warning looks to be affecting tourist crowds on Miyajima
Studio Ghibli releases new “komorebi” plush toys from Princess Mononoke and Spirited Away
Yokai are descending upon Tokyo this spring in the latest immersive art experience
Japan’s Naruto theme park now offering real-world version of Minato’s kunai ninja weapon
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
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
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
Starbucks Japan reveals new sakura drinkware collection, inspired by evening cherry blossoms
The restaurant where one of Japan’s last samurai lords ate now has a café with really good cake
How a samurai’s quest for revenge created one of Tokyo’s best cafes, and it’s still open