From Saturday, October 10 to Sunday, November 15, 2026, the "Miiruka x NANKAI Collaboration Stamp Rally" (みいるか×ＮＡＮＫＡＩコラボスタンプラリー) takes place around Namba, Shinsekai, and Nipponbashi in Osaka. It is part of "GREATER NAMBA FESTIVAL" (グレーターなんばフェスティバル), an urban festival set in the Greater Namba area, which stretches from Namba to Shinsekai and Shin-Imamiya. The stamp rally is the first collaboration between NANKAI Co., Ltd. (NANKAI) and Miiruka, a popular creator and illustrator with more than 1.5 million total followers across social media.
Visitors use their smartphones to collect digital stamps at seven spots scattered across Namba, Shinsekai, and Nipponbashi, with original wallpapers using newly drawn illustrations and a prize draw as rewards. As another GREATER NAMBA FESTIVAL program, Osaka Takashimaya hosts a pop-up shop, "Chō☆Miiruka Mart" (超☆みいるかマート), selling limited-quantity items, along with an autograph session where fans can meet Miiruka in person.
Collect Stamps on Your Smartphone: Miiruka x NANKAI Collaboration Stamp Rally
While walking around Minami, where Namba, Shinsekai, and Nipponbashi bring together tasty and fun spots, participants can collect Miiruka's cute digital stamps. Collecting stamps earns an original wallpaper using a newly drawn illustration that is available only through this stamp rally, and participants can also enter a gift campaign that lets them enjoy Minami to the fullest. The seven spots suit weekend family outings and sightseeing with friends alike.
How to Join
- Open the dedicated site on your smartphone.
- Launch the dedicated site near one of the target spots.
- Collect the digital stamp.
The dedicated site opens at 12:00 AM on Saturday, October 10, 2026.
Participation Fee
Free
Stamp Spots
Regular spots (5)
- Namba Hiroba (なんば広場): Right in front of Namba Station, a fitting starting point for the adventure.
- Namba Parks: A lifestyle spot full of greenery.
- OMO7 Osaka by Hoshino Resorts: A stylish hotel with the flavor of Osaka.
- Tsutenkaku: The symbol tower of Osaka.
- Nipponbashi General Information Center (日本橋総合案内所): An information center in a pop culture town.
Limited-time spots (2)
- Former Emi Elementary School site (恵美小学校跡地): A rare spot that can be entered only during this period. The stamp is available on October 10 (Sat) and 11 (Sun) only.
- Osaka Takashimaya: The central base, which also hosts the pop-up shop. The stamp is available from October 21 (Wed) to November 3 (Tue, holiday) only.
Participation Rewards
Available nowhere else: limited collaboration rewards themed on Namba and Osaka.
- 5 spots completed: An original wallpaper with a newly drawn illustration (1 design)
- 6 spots completed: An additional original wallpaper with a newly drawn illustration (another design)
- Bonus chance: Among those who obtained a wallpaper, 100 winners are chosen by lottery to receive a dining voucher worth ¥2,000 usable at Namba Dining Maison (なんばダイニングメゾン) in Osaka Takashimaya
How winners can redeem their prizes will be announced separately.
Enjoy Namba With Miiruka: "GNF Friend" Partner Store Perks
Alongside the stamp rally, visitors can stop by the "GNF Friend" partner stores (GNFフレンド加盟店) to enjoy walking around Namba even more.
During GREATER NAMBA FESTIVAL, restaurants and commercial facilities around Namba that are GNF Friend partner stores offer perks such as discounts and gifts when customers show the screen of the GREATER NAMBA FESTIVAL official website. GNF Friend partner stores are shops and facilities that support the aims of GNF and offer benefits and services so that visitors can enjoy walking around town more. Visitors can combine food and shopping with their stamp rally route around Namba.
GNF Friend Partner Stores Recommended for Stamp Rally Participants
Hokkyoku Namba Main Store (北極 なんば本店)
- Perk: 10% off coffee, tea, and cream soda
- Period: Weekdays from October 10 (Sat) to October 31 (Sat)
- Location: Map
Botan Kashiten (ぼたん菓子店)
- Perk: Customers who visit receive a free piece of the edge of a delicious scone
- Period: Entire period (October 10 (Sat) to November 15 (Sun))
- Location: Map
ANCHORED by RIHGA OSAKA NAMBA, Dining & Lounge KOTE KOTE
- Perk: One free drink for customers who order a meal (some items excluded), or a hotel original knit bag (first 50 customers in total during the period)
- Period: Entire period (October 10 (Sat) to November 15 (Sun))
- Location: Map
For other GNF Friend partner stores and their perks, see the official website.
Stamp Rally Destination: "Chō☆Miiruka Mart" at Osaka Takashimaya
Osaka Takashimaya, which is also a limited-time stamp spot, opens a special pop-up shop. The space is decorated with a photo spot using the newly drawn key visual and with Miiruka's handwritten signs, making it a must-see for fans.
- Period: Wednesday, October 21 to Tuesday, November 3 (holiday), 2026
- Venue: 7th floor event space, Osaka Takashimaya
Limited-Quantity Items and Purchase Perks
In addition to the popular regular "Miiruka Mart" (みいるかマート) items, this special edition of the pop-up shop offers limited-quantity products and exclusive novelty items. Customers who spend ¥3,300 or more (tax included) also receive one randomly chosen "Yurayura Magic Card" (ゆらゆらマジックカード), from a set of 3 designs, per transaction.
Meet Miiruka in Person: Miiruka Autograph Session
Customers who purchase eligible items at the pop-up shop can take part in an autograph session where they can talk directly with Miiruka.
- Date: Saturday, October 24, 2026
- Time:
- 11:00 AM to 12:00 PM
- 1:00 PM to 2:00 PM
- 3:00 PM to 4:00 PM
- 5:00 PM to 6:00 PM
- Venue: Special space near the central escalator on the 7th floor, Osaka Takashimaya
How to Participate
Starting Wednesday, October 21, 2026, numbered tickets for participation will be handed out on a first-come, first-served basis at the "Chō☆Miiruka Mart" venue to customers who purchase eligible items. Those who wish to take part should bring their numbered ticket on the day of the event.
Notes
- Numbered tickets are available not only for purchases made on the day of the autograph session, but for any eligible item purchased on or after Wednesday, October 21, 2026.
- Autographs are written on a special shikishi board prepared by the organizer.
- Photography, video recording, and audio recording are not allowed during the autograph session.
- Event details may change or the event may be canceled without notice.
About the Creator Miiruka
Miiruka is an illustrator and video creator with a background as a former aquarium guide. Active mainly on social media, Miiruka works to give children a chance to become interested in sea creatures. In the second year of social media activity, Miiruka received the TikTok Creator Awards Japan 2022 Popular Creator of the Year award. As of 2026, the total number of social media followers exceeds 1.5 million. Events drawing on the experience as an aquarium guide are also held across Japan, gathering many fans who found Miiruka through social media. "Yuruiruka" (ゆるいるか), a dolphin fairy character presented on social media, is an original character born from the author's love of dolphins since the age of three. Through illustrations, manga, animation, and sometimes plush-toy theater, Miiruka shares a relaxed and cute world.
About GREATER NAMBA FESTIVAL
GREATER NAMBA FESTIVAL (グレーターなんばフェスティバル) is an urban festival held in the Namba, Shin-Imamiya, and Shinsekai areas under the vision of "making Namba the No. 1 destination in Asia." Local businesses, organizations, creators, and artists work together to offer a wide range of programs covering music, art, sports, and food. By treating the whole town as one venue, the festival creates new encounters between people and between people and the town. In 2026, it runs from October 10 to November 15, and a variety of events, including the Miiruka x NANKAI Collaboration Stamp Rally, will liven up the Greater Namba area.
"minapita Point Present Campaign"
At seven GREATER NAMBA FESTIVAL venues, a campaign lets visitors earn 100 minapita points by downloading the NANKAI App. After downloading the "NANKAI App" (南海アプリ), simply scan the dedicated NANKAI App QR code placed at the venue to receive 100 minapita points right away.
Campaign Venues
- October 10 (Sat) and 11 (Sun) / Former Emi Elementary School site (next to Emi Park): The 5th Shin-Imamiya eat around Shokumachi Fes (第５回 新今宮 eat around 食まちフェス) (11:00 AM to 4:00 PM)
- October 10 (Sat) and 11 (Sun) / Namba Parks (Carnival Mall, 1st floor): Creator Expo (クリエイター博覧会) Part 1 (11:00 AM to 5:00 PM)
- October 17 (Sat) and 18 (Sun) / Namba Parks (Carnival Mall, 1st floor): Creator Expo (クリエイター博覧会) Part 2 (11:00 AM to 5:00 PM)
- October 12 (Mon, holiday) / Namba Parks (Carnival Mall, 1st floor): Osaka Pro Wrestling (1:00 PM to 4:00 PM)
- October 17 (Sat) and 18 (Sun) / Namba Hiroba (next to the smoking area): GREATER NAMBA FESTIVAL Location Theater VENUE.01
- October 25 (Sun) / Tsutenkaku (Underground Waku Waku Land, 地下わくわくランド): GREATER NAMBA FESTIVAL@TSUTENKAKU (10:00 AM to 5:00 PM)
- October 11 (Sun), 18 (Sun), 25 (Sun), and November 1 (Sun) / OMO7 Osaka by Hoshino Resorts: OMO7 Osaka Music Lounge
The QR codes for the point present are set up only during each venue's event hours.
