To celebrate the 20th anniversary of Aeon Mall Musashi-Murayama, a collaboration event featuring the Sanrio character “Kerokero Keroppi” is being held!

From Friday, October 9, 2026, through Sunday, October 25, 2026, there will be a stamp rally where you collect stamps as you explore the mall, giveaways of original stickers, and character meet-and-greets.

Details of the Kerokero Keroppi × Aeon Mall Musashi-Murayama “20th Anniversary Festival”

To celebrate the 20th anniversary of Aeon Mall Musashi-Murayama, Kerokero Keroppi is hosting a special collaborative event!

In addition to a stamp rally and free stickers, Keroppi will make announcements over the mall’s PA system and photo spots will be set up throughout the event period.

Stamp Rally: Collect Stamps by Walking Around the Mall

This is a stamp rally where you complete a single design by collecting all four types of stamps placed throughout the mall.

*Distribution of stamp rally booklets will end once supplies run out.
*Please check the back of the booklet for details on the stamp rally.
*To receive a booklet, please ask a store employee at one of the distribution locations.
*The image shows the design of the stamp rally booklet.

Original Sticker Giveaway

During the campaign period, present a receipt showing a purchase of 3,000 yen (tax included) or more (total amounts can be combined) at a specialty store to receive an original sticker.

Another highlight is that the sticker design changes between Phase 1 and Phase 2!

*Image is for illustrative purposes only.
*This offer ends when supplies run out.
*Receipts cannot be used in conjunction with other campaigns (excluding benefits offered by individual specialty stores).
*Aeon Style stores and stores/products that do not issue receipts are excluded from this offer.

Keroppi’s In-Store Announcements

During the campaign period, Keroppi will be making some of the in-store announcements.

You might even hear announcements in Keroppi’s voice—a little different from the usual in-mall broadcasts!

Photo Spot

During the event period, a photo spot will be set up on the 3rd floor at the South Bridge (in front of Petemo) where you can take photos with Keroppi and his friends!

It will be set up from Friday, October 9, 2026, through Sunday, October 25, 2026.

Kerokero Keroppi Greeting Event

On Sunday, October 11, a Kerokero Keroppi meet-and-greet will be held!

A “Everyone’s Time Capsule Unveiling Ceremony” is also scheduled, during which a time capsule containing 300 letters written by visitors to their future selves at the 11th-anniversary event in 2017 will be opened.

*Event details are subject to change.
*Numbered tickets will no longer be distributed once the allotted number has been reached.
*When numbered tickets are distributed, participants will be asked, starting with the person at the front of the line, choose between the “Photo Session” or the “Everyone’s Time Capsule Unveiling Ceremony & High-Five Session.”
* One numbered ticket will be distributed per representative; each ticket allows admission for up to four people.
* Staff will verify your numbered ticket before you enter the venue. If verification is not possible, you may be denied entry.
* Each greeting session is scheduled to last approximately 30 minutes.
* Those holding a numbered ticket for the “Everyone’s Time Capsule Unveiling Ceremony” may enter the priority viewing area (unreserved seating). After the unveiling ceremony ends, those in the priority viewing area can high-five Kerokero Keroppi (This is not a photo session).

Kerokero Keroppi × AEON Mall Musashi-Murayama—Starting October 9!

*Events are subject to change or cancellation without prior notice.

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Kerokero Keroppi × AEON Mall Musashi-Murayama “20th Anniversary Celebration” Frequently Asked Questions

When will the Kerokero Keroppi × AEON Mall Musashi-Murayama collaboration event take place?

It will be held from Friday, October 9, 2026, to Sunday, October 25, 2026. Operating hours are from 10:00 a.m. to 9:00 p.m., though operating hours may vary at some stores.

How can I get the original sticker?

Present a receipt showing a purchase of 3,000 yen (tax included) or more (total from multiple purchases accepted) at a specialty store during the event period at the special counter on the 3rd floor at South Bridge (in front of Sanrio) to receive one. On weekdays, the first 500 customers each day will receive a sticker; on Friday, October 9, and on weekends and holidays, the first 1,000 customers each day will receive one.

How many different sticker designs are there?

The designs differ between Phase 1 (October 9–October 16) and Phase 2 (October 17–October 25).

When is the Keroppi meet-and-greet?

It will be held on Sunday, October 11, at the 1st-floor Center Court. Photo sessions will take place at 11:00 and 16:00, and at 2:00 PM there will be the “Everyone’s Time Capsule Unveiling Ceremony” and a high-five session. Each session is limited to the first 30 groups. Admission tickets will be distributed starting at 9:30 AM on the day of the event at the West Entrance of the 1st Floor Center Court.

Where can I get the stamp rally booklet?

They are distributed at participating stores inside the building. Specialty stores on each floor, such as Sanrio on the 3rd floor, are distribution points, and supplies are limited.

Please check the official website.
*Please note that the information in these articles may be outdated. We apologize for the inconvenience, but please check the official website for the latest details.

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