The mushroom character Nameko (なめこ) — star of the mobile game Osawari Tantei Nameko Saibai Kit, known overseas as Mushroom Garden — turns 15 in 2026. To celebrate, a pop-up store runs from October 2 to 15, 2026 at Ichiban Plaza inside Tokyo Station.
The shop features anniversary goods, purchase bonuses, a photo spot, and even autograph sessions with Danboru Nameko (a cardboard Nameko mascot). A few things are worth checking before you go: the autograph tickets come with a spending requirement, the character greetings happen on only a handful of days, and the limited goods sell out.
Character pop-ups come and go all over Tokyo right now. If you also like Chiikawa, our guide to the Chiikawa x Tokyo Skytree collaboration is worth a look.
Dates, hours, and venue
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The pop-up runs October 2 (Fri) to October 15 (Thu), 2026, from 10:00 to 20:30. The one exception is October 15, the final day, when the pop-up closes early at 18:00.
The venue is Ichiban Plaza, on the B1 floor of Tokyo Station Ichibangai, inside Tokyo Character Street. It is about a one-minute walk from the Yaesu North Exit of JR Tokyo Station, so it is easy to drop by between trains.
Item | Details |
|---|---|
Dates | October 2 (Fri) – October 15 (Thu), 2026 |
Hours | 10:00–20:30 (final day Oct 15 closes at 18:00) |
Venue | Ichiban Plaza, B1F, Tokyo Station Ichibangai |
Organizer | Juice Inc. |
Note that Kiddyland is running a separate "Nameko 15th" project over the same dates at its Harajuku, Shinjuku, and Osaka-Umeda stores. Those events are run by a different operator. This article covers the Tokyo Station Ichiban Plaza venue only.
Getting in and beating the crowds
The press release does not state an admission fee or whether you need to reserve a slot. Check the official Nameko site or Tokyo Station Ichibangai for the entry details shortly before you visit.
The organizer does note that entry may be restricted when the venue gets busy. Weekends and the opening day are likely to be crowded, so visiting on a weekday or just after opening may make entry easier.
Limited-edition goods are available while supplies last. If there is something you really want, go in the first half of the run.
Anniversary goods and prices
Here are the main new items and their prices (tax included).
15th Anniversary Nameko Mascot (¥1,980)
© Beeworks/SUCCESS
A commemorative mascot made for the 15th anniversary lineup.
Giant Nameko Plush Lottery (¥1,320 per try)
© Beeworks/SUCCESS
Each draw gives you a chance to win a large "Giant Nameko" plush.
Trading Sparkly (Gira-Gira) Square Can Badges (¥440 each / ¥3,520 box)
© Beeworks/SUCCESS
Sparkly trading can badges in eight designs. You can buy them singly (¥440) or as a box of eight (¥3,520).
Trading Mini Drawstring Pouches (¥990 each / ¥5,940 box)
© Beeworks/SUCCESS
Mini pouches in six designs, available singly (¥990) or as a box of six (¥5,940).
Other items include a 15th anniversary souvenir bag (¥1,650) and a two-piece anniversary pouch set (¥1,980).
New items such as T-shirts and snacks are also planned, but the individual products and prices have not been announced yet. Some limited items may have a per-person purchase limit, though the exact number has not been stated.
Purchase bonuses
Spend enough in one transaction and you receive a bonus. Spend ¥4,400 or more and you get a 15th anniversary acrylic keychain (one design); spend ¥8,800 or more and you get a random plush badge (two designs). Both bonuses run out once the stock is gone.
For example, a box of can badges (¥3,520) plus one mascot (¥1,980) comes to more than ¥4,400, so it helps to keep the total in mind as you shop.
Autograph tickets and greetings
Autograph tickets require a purchase of ¥2,200 or more, and the distribution method has yet to be announced. Character greetings run on only six days: October 2–4 and October 10–12.
The run also includes character greetings where you can take photos, along with autograph sessions with Danboru Nameko.
Greetings take place on only six days — October 2–4 and October 10–12 — at 11:00 and 14:00 each of those days. On October 2–4, Nameko appears in a 15th anniversary outfit; on October 10–12, one of four characters (Nameko, Masaru, King Nameko, or Angel Nameko) appears at random.
Autograph sessions are planned for October 2–4, 7, 11–12, and 14–15. You need a ticket to join: spend ¥2,200 or more in one transaction and you can receive up to two, handed out between 10:00 and 15:00.
Further details on ticket distribution will be announced later, and simply showing up does not guarantee a spot. Check the official site in advance if you plan to take part.
There are no greetings or autograph sessions on October 5, 6, 8, 9, and 13.
What is Nameko (Mushroom Garden)?
Nameko comes from Osawari Tantei Nameko Saibai Kit, a mobile game first released in 2011. You harvest mushrooms growing on a log, and Nameko, known for its laid-back expression, along with friends such as Masaru, has appeared in many stationery and merchandise collaborations over the years. This pop-up celebrates 15 years of the character.
If you are planning an autumn trip to Tokyo around the same time, see our guide to Tokyo's autumn leaves in 2026.
This article was translated from the original Japanese with AI assistance and reviewed by our editorial team. The Japanese version is authoritative.
