by Hello, this is Rikao Yanagita from the Institute of Science and Technology. I enjoy thinking about manga, anime, special effects programs, etc., from the perspective of science fiction. By the way, today’s research report is.
The “TV anime” Kimetsu no Yaiba “Infinite Train Edition” that started on October 10 is as enjoyable as expected!
In the second episode, Sumijiro, Zeni, Inosuke, and Purgatory were put to sleep on an infinite train. What will happen after this!? …… I already know the flow of the story, so it just makes me sadder.
Therefore, in this article, I would like to consider the greatness of Mr. Purgatory depicted in the first episode, “Purgatory Anjuro.”
This story is an entirely original story that depicts Mr. Purgatory getting on an infinite train, and it was a masterpiece that slowly conveys kindness and reliability.
In addition, the manga and theatrical animation revealed why Purgatory was eating a large amount of bento, and I was surprised. I ate 11 bento boxes in manga and 13 bento boxes in theatrical animation in the car, and I thought that was an exaggeration to show Purgatory’s excitement, but there was a reason.
Purgatory was eating “Sukiyaki Sukiyaki,” which cost 36 sen. According to the site “How to raise money” of Mitsubishi UFJ Trust and Banking, “1 yen in the Taisho era is about 4,000 yen now” (article on October 7, 2020 / supervision: Yuichi Yoshino). 36 sen is 1440 yen. The price is higher than the author’s favorite “Fukagawa-meshi” for 1000 yen. If you buy 13 of them, it costs 18,720 yen. It’s quite an amount.
I am more concerned about the calorie intake, which is 982 kcal per piece, considering that it is the same as the “Beef Suki Nabe Zen” sold at the Yoshinoya because of its volume. If it is 13, it will be 12,766 kcal, the same as the calorie intake for five days for an adult man!
The blue demon is fantastic!
At this rate, it seems that we will continue to think about bento boxes endlessly, so let’s get into the main subject.
In the first episode, a blue demon called “Rip Demon” moved around considerably. With that quick movement, he takes hostages to the workers at the maintenance shop, tries to attack the girl in the lunch box shop, and so on.
He ran along the railroad tracks from the garage to find the station where the girl was.
The typical steam locomotive 8620 of the Taisho era boasts the highest speed of Odoroki at 95 km / h, but the demon’s running is much faster than that.
Then, I ran through the station’s platform at the speed of a passing limited express train. I noticed the smell of a lunch box and stopped at that station.
This act is a little extraordinary. Assuming that the demon weighs 80 kg and is running at 100 km / h, and stops at a braking distance of 1 m, the demon’s legs will exert a braking force of 6.3 tons, and the body will also be impacted by 6.3 tons. It must have taken.
That’s why I’m calm, so I have to say that it’s a sneaky guy with great athletic ability.
Purgatory chased the demon after giving first aid to the injured worker.
At first, I ran usually, but when I chanted “totally concentrated breathing,” the speed increased. The footsteps also get faster and faster, from “tattattattatta” to “tattattattatta!”. Eventually, Purgatory disappeared, leaving behind a whirlpool of orange flames.
How fast was this?
For example, in the case of Usain Bolt, he ran a world record race with a stride of 1.24 times his height. If this ratio is the same, Purgatory, who is 177 cm tall, will have a stride of 2.2 m.
If the pace of “Tata Tata” is five times per second, the speed is 40 km / h, if it is ten times, it is 79 km / h, and if it is 15 times, it is 119 km / h.
What is Purgatory’s speed?
So, let’s find out the running speed of Purgatory from another scene.
In the first episode, there is a scene where Mr. Purgatory jumps off the steam locomotive. Purgatory, who was on the train, was informed that the infinite train he was aiming for was under construction at a nearby factory, and he said, “If so, I’ll get off here too!” I jumped from the end.
From the surrounding conditions, the train was running at about 60 km / h, and it is usually about to be hit on the ground at 60 km / h.
Of course, Purgatory didn’t do that, and when he jumped high with many of his bento boxes in his hands, he flew in the air for 6.2 seconds and landed softly.
According to my own eyes, his landing point seems to be about 100 meters away from the railroad tracks of the train he was on. The direction of the jump is guessed, but is it about 30 degrees backward?
To simplify the story, assuming that the takeoff point and the landing point are the same, Mr. Purgatory jumped out at an elevation angle of 59 degrees and a speed of 128 km / h when viewed from the train. And after reaching an altitude of 47m, it should have landed 3.1 seconds later.
Considering that the train was running at 60km / h, the landing speed was 127km / h. He has succeeded in slowing down the landing speed slightly because he jumped backward from the running train at an exquisite angle.
By the way, you can guess the running speed of Purgatory from here.
The author has calculated the takeoff speed from the average record of vertical jumps of high school students and obtained that “the takeoff speed is almost half of the average of the 50m run”.
In other words, a person who can jump at 128 km / h can run twice as fast. That means Purgatory can run at least 256km / h! What a Shinkansen!
In an era when steam locomotives became widespread, Purgatory ran at Shinkansen-level speeds. He scolded the demon, who is proud of his speed, saying, “You are slow!”, But this flame pillar certainly qualifies to say so. How amazing he is!
