Announcements pairing Myaku-Myaku, the official character of Expo 2025 Osaka, Kansai, with Tunku Tunku, the official mascot of GREEN×EXPO 2027, have kept appearing since September 2025. They come from different organisers, Japan’s Ministry of Land, Infrastructure, Transport and Tourism, the GREEN×EXPO Association and Kanagawa Prefecture, and cover goods, a confection and joint event appearances. Here is every announcement we have confirmed as of 17 September 2026, in date order.
1. Timeline of announcements
| Announced | What | Where to buy or see it | Price | Source |
|---|---|---|---|---|
| 18 September 2025 (event 23-27 September) | Collaboration ball-chain mascots and stickers appear at an Expo 2025 venue exhibition | Gallery EAST (East Gate Zone E13), Expo 2025 Osaka, Kansai | Not stated | MLIT |
| 22 October 2025 (on sale 4 November) | “Yokohama Harbour Double Marron” confection goes on sale, alongside a restock of three items | EXPO 2027 official store, Ariake’s own shops and online store | ¥1,188 | GREEN×EXPO Association |
| 10 March 2026 (on sale 18 March) | Six new items (knapsack and more) and four restocked items | EXPO 2027 official store, Maruzen Marunouchi, official online store | ¥520-1,980 | GREEN×EXPO Association |
| 17 August 2026 (event 23 September) | Both characters scheduled to appear together at the “Six-Months-to-Go Event in Kanagawa” | Dinacity West, Odawara (event over) | Free to attend | Kanagawa Prefecture |
| 21 August 2026 (pre-orders from 22 August) | “Triple collaboration” with Mizuno: shoes, a T-shirt and three more items | EXPO 2027 official pop-up store at Sakishima Morena, Mizuno’s own and online stores | ¥2,200-17,600 | GREEN×EXPO Association and its master license office |
| 16 September 2026 (event 15 September) | Myaku-Myaku, Morizo, Kiccoro and Hanazukin-chan join Tunku Tunku for a photo session at the six-months-to-go press conference | Press event; photos in the Association’s release | None | GREEN×EXPO Association |
| 28 September 2026 (on sale that day) | Pure gold “Baton Touch” coin showing Myaku-Myaku passing a baton to Tunku Tunku; 260 pieces | I.E.I Original Shop (mail order) | ¥659,780 | Imperial Enterprise |
| 21 October 2026 (on sale 29 October) | “Smartphone Shoulder BOOK”, a mook with an embroidered phone shoulder bag of the two characters | Bookshops nationwide, Amazon, Rakuten Books, BOOK Pia | ¥3,300 | Pia |
As of 22 October 2026, these are the eight Myaku-Myaku x Tunku Tunku announcements we have confirmed.
2. 2025: first appearances at the Expo 2025 venue and the “Yokohama Harbour Double Marron”
The two characters first appeared together during Expo 2025 Osaka, Kansai. According to Japan’s Ministry of Land, Infrastructure, Transport and Tourism, an exhibition titled “2027 International Horticultural Expo Exhibition: Flower Culture Connecting to the Future” ran from 23 to 27 September 2025 in Gallery EAST (East Gate Zone E13) at the Expo venue, free of charge and with no reservation needed. Collaboration goods, ball-chain mascots and stickers featuring Tunku Tunku and Myaku-Myaku, appeared at this exhibition. Sales ran for 23 September only, while a commemorative stamp was set up from 23 to 27 September. The announcement does not state a price.
The GREEN×EXPO Association followed on 22 October 2025 with a confection, the “Myaku-Myaku x Tunku Tunku Yokohama Harbour Double Marron.” It is a sponge-cake sweet wrapped around a house-made chestnut filling, five pieces for ¥1,188 including tax. It went on sale from 4 November 2025 at the EXPO 2027 official store and at Ariake’s own shops and online store. The same announcement restocked a clear file (¥520), a keyring (¥770) and a sticker (¥660).
3. March 2026: six new items and four restocks after selling out
In its March 2026 announcement, the Association looked back on the goods that first appeared in September 2025, saying stores “sold out one after another right after launch.” In the same release, dated 10 March 2026, it announced six new items and four restocks. The new items were a knapsack (¥1,980), a zip pouch and a drawstring bag (¥880 each), a shoulder pouch (¥1,210), a mini banner (¥1,100) and a commemorative medal (¥1,800). The restocks were a clear file (¥520), an acrylic keyring (¥770), a sticker and a tin magnet (¥660 each). Sales began in stages from 18 March, with Maruzen Marunouchi and the official online store starting on 20 March.
4. August and September 2026: a Kanagawa event, the Mizuno triple collaboration and the six-months-to-go press conference
On 17 August 2026, Kanagawa Prefecture announced the “GREEN×EXPO 2027 Six-Months-to-Go Event in Kanagawa,” scheduled for 23 September 2026 (a Wednesday holiday) at Dinacity West in Odawara. According to the prefecture, Tunku Tunku and Myaku-Myaku were to appear together, alongside an opening talk with actor Eiichiro Funakoshi, a mascot greeting session and an origami workshop. Attendance needed no application and was free, though the greeting session ran by lottery with tickets distributed in advance. The event was organised by Kanagawa Prefecture with the GREEN×EXPO Association as a supporter. That date has passed.
Four days later, on 21 August, the Association and its master license office announced a “triple collaboration” adding Mizuno. It covers five products: shoes called “ME-DELIGHT JQ EXPO” (¥17,600), arm covers (¥3,190), a dry towel (¥2,200), a T-shirt (¥6,490) and a “Bolletch” dumbbell ball (¥9,900). Pre-orders opened at 10:00 on 22 August at the EXPO 2027 official pop-up store at Sakishima Morena in Osaka (for one day only) and at Mizuno’s own and online stores. General sale is planned for around March 2027. The Association calls this its first round.
At the six-months-to-go press conference on 15 September 2026 (reported by the Association on 16 September), Myaku-Myaku was joined by Morizo and Kiccoro of Expo 2005 Aichi and Hanazukin-chan of the 1990 International Garden and Greenery Exposition in Osaka, and the four took part in the photo session with Tunku Tunku. The Association introduced them as the official characters of the international expositions held in Japan. At the same event, Toshiro Ino, State Minister of Economy, Trade and Industry, said in his remarks that Myaku-Myaku and Tunku Tunku are touring the country on a caravan that carries the Expo 2025 experience to other regions and introduces the Yokohama expo.
5. September and October 2026: a “baton” gold coin and a mook sold in bookshops
Around the first anniversary of Expo 2025’s closing, the imagery of the two characters shifted from “together” to “passing on”. On 28 September 2026, Imperial Enterprise began mail-order sales of a pure gold “Baton Touch” coin showing Myaku-Myaku holding a baton in front of the Grand Ring and Tunku Tunku surrounded by flowers. It is limited to 260 pieces at 659,780 yen and is an official licensed product of both expos (see our news item on the coin).
On 21 October, Pia announced a mook with a phone shoulder bag embroidered with the same composition, the “Tunku Tunku & Myaku-Myaku Smartphone Shoulder BOOK”. It is A4, eight pages, 3,300 yen, on sale from 29 October. Earlier collaboration goods were sold mainly at the Association’s official store and at events; this one can be pre-ordered at bookshops across Japan and online (see the announcement).