
Can an anthropomorphised prison wall really capture the heart of a child?
Recently, our reporter Yuuichiro Wasi stopped by a kyoseiten in Tokyo’s Shinjuku Station. Kyoseiten, which literally translates to “correction exhibition“, are held in stations and other event spaces every now and then, and the items on display are actually for sale, and all made by prison inmates as part of a prison work and education program.
▼ 矯正展 = kyoseiten
Yuuichiro was surprised by the range of items on sale at the kyoseiten, with everything from bags, wallets and chopsticks available. However, one of the things that surprised him most was the selection of books and art goods aimed at children.
As he browsed the books, a children’s colouring book with a cute character design caught his eye.
▼ Who knew such a cute product was being made behind prison walls?
The character on the front was Akarenga-kun, with akarenga meaning “red brick” and “kun” being the suffix used for names of boys, male adults you’re close to, and male characters. Akarenga-kun is the mascot character of Chiba Prison, and is appropriately styled to look like a red brick wall, with a correctional officer’s hat.
According to the Ministry of Justice’s mascot character popularity poll, Akarenga-kun ranked 19th out of 74 characters, others of whom represent various government offices as well as a scattering of other prisons.
▼ So Akarenga-kun appears to be quite popular, despite essentially being an anthropomorphic prison wall.
As dad to an 18-month-old daughter, Yuuichiro wondered whether Akarenga-kun would have what it takes to capture her heart. Her favourite character at the moment is Anpanman, so he couldn’t be sure if she had room in her heart for a prison wall, but he decided to try it anyway, purchasing the colouring book and handing it to her when he got home.
He hoped to take a few photos of the book before she began colouring, but as soon as he released it into her possession, she had no interest at all in returning it.
▼ “Out of the way, Dad! I’ve got me some colouring to do!”
Yuuichiro tried to reason with her, saying “Hey, just let me take a couple of photos of the book first!” But she would have none of it.
▼ “Nooooo! Is mine!”
“You can play with it after I’ve taken the photos!” Yuuichiro continued, but now he was getting the silent treatment, as his daughter was busy familiarising herself with Akarenga-kun.
It was as if she was now off in her own world, and much more interested in Akarenga-kun than Yuuichiro.
Now there was no chance of him getting a picture, as her tiny hand was gripping the book with all her might as she ran off to get some crayons.
After propping her up in her chair at the table, his daughter began to wield her crayons, laying down a series of wild, artistic strokes of colour on the paper. Yuuichiro now realised that Akarenga-kun really had succeeded in capturing the heart of his daughter, even without any backstory or animated visuals.
Admittedly, this was the first colouring book she’d ever received, so that could’ve added to the excitement, but as she added colour to the page, her eyes never strayed from Akarenga-kun.
Though Yuuichiro thought the colouring book was pretty stock standard, with 12 pages depicting Akarenga-kun taking part in various sports such as soccer and basketball, his daughter thought it was fantastic.
▼ And the work she produced was a wild explosion of unbridled art.
Who knew a prison mascot could be so captivating? The colouring book cost just 150 yen (US$1.03), making it a great deal for the level of entertainment it provided. While the kyoseiten at Shinjuku Station has since shut its doors, the site linked below has information on upcoming locations, with the next one scheduled for 9 and 10 December at Tokyo International Forum.
So if you’re in Tokyo at that time, you might want to stop by and see what’s on offer — Yuuichiro can also recommend trying the ramen noodles made by prison inmates.
Related: Ministry of Justice Character Grand Prix, Kyoseiten Location Information
Photos © SoraNews24
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!
[ Read in Japanese ]













Akihabara pop-up shop sells goods made by Japanese prison inmates
Super-sexy outfit for Beauty and the Beast’s Belle made by Japanese girl’s coloring book mistake
Nine amazing off-the-beaten-path cherry blossom spots in Japan for yaezakura and shidarezakura
Mister Donut wows matcha lovers in Japan with new Dora Matcha doughnuts
Stunning central Japan wisteria festival is like a purple fantasy straight out of a Ghibli movie
Starbucks Japan releases new My Fruit³ Frappuccino at only 34 stores around the country
Tokyo government organizes food truck event to clear out delinquent/homeless teen gathering area
How much is Amazon Japan’s lowest-rated currency calculator worth in yen?
10 awesome Tokyo cherry blossom festivals and experiences for this year’s sakura season
Studio Ghibli adds new anime tumblers to its cool streetwear brand in Japan
Giant rubber duck arrives in Osaka!
Beyond sakura: How to tell a cherry blossom from a plum or peach flower
Train station platform ramen store closes its doors on half a century of history in Tokyo
Japanese onsen egg maker from 100-yen store Daiso needs to be on your shopping list
Cherry blossoms begin blooming in Japan with record-early starts for sakura season
Studio Ghibli adds new Mother’s Day gift sets to its anime collection in Japan
The next time you’re feeling stressed out, you could relax on a Pokémon Psyduck chair from Japan
Virtual idol Hatsune Miku redesigned with look that adds new elements and brings back old ones
When will the cherry blossoms reach full bloom in Japan this year?[Forecast]
7-Eleven Japan’s giant fried chicken skewer would be too big to eat, so it’s really for cuddling
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
Studio Ghibli releases Catbus pullback keychain that runs like the anime character
Nine great places to see spring flowers in Japan, as chosen by travelers (with almost no sakura)
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
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
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
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