[Seibuen Amusement Park] 3 Days Only! Enjoy Heartwarming Happiness with Your Dog at Seibuen Amusement Park! Diverse Activities to Deepen the Bond with Your Pet: "Wan Wan Seibuen Amusement Park" – May 15 (Fri) to May 17 (Sun), 2026

Seibuen Amusement Park (Location: Tokorozawa City, Saitama Prefecture; General Manager: Tomohiro Nishida) is pleased to announce "Wan Wan Seibuen Amusement Park," a special event held from May 15 (Fri) to May 17 (Sun), 2026. This marks the first time since the park's renewal that guests can enjoy the facilities together with their dogs.

This event focuses on the experience of doing things "together" with your dog in the extraordinary setting of an amusement park. Guests can enjoy a wide variety of content designed to deepen the bond with their pets, including riding attractions that are usually off-limits to animals, the "Sunset Hill Dog Run" (separated by dog size), a "Splash Pool" to get a head start on summer, nostalgic photo spots, and a "Mini Marche" featuring a curated selection of pet brands.

We invite you to join us for this hands-on event at Seibuen Amusement Park, designed to strengthen the bond with your dog and promote socialization.

■ Event Overview

① Riding attractions together ② Dog run ③ Splash pool ④ Mini Marche ⑤ Photo spots

■ Dog Admission Fee: 1,100 yen

* On May 15 (Fri) only, same-day admission is 600 yen.

* Advance tickets are available for 500 yen if purchased by the day before.

■ Ticket Sales: Information will be available on the website starting April 16 (Thu).

https://www.seibuen-amusement-park.jp/ticket/

1. Enjoy Attractions with Your Dog!

A total of five attractions will be available for guests to ride with their dogs (Merry-Go-Round, Challenge Train, Leo and Raiya's Jungle Dance Party, Fly! Jungle Hero Leo, Leo and Raiya's Sunset Train).

Under the supervision of a veterinarian, we have prepared a boarding environment where dogs can ride safely. We aim to help families create special memories by sharing the views from the attractions together.

2. Run Freely! "Sunset Hill Dog Run"

A special temporary dog run will appear in the park for this event only. Dogs can play off-leash in a grassy area that is gentle on their paws and joints. It is the perfect spot for making memories with family and friends.

3. Exciting Water Fun! "Splash Pool"

A dog-only "Splash Pool" will be available to beat the heat. You can watch your dog play actively, splashing in the shallow water or chasing toys.

4. Supervised by FLAFFY! Mini Marche in Seibuen Amusement Park

We are hosting a Mini Marche featuring carefully selected pet brands, supervised by FLAFFY Co., Ltd. (Location: Nakano-ku, Tokyo; CEO: Chisa Hirota), the organizers behind successful events like "Japan Wanko Festa." The market will feature high-quality food, care products, and dog goods to enrich life with your pet.

5. Photo Spots

The park is filled with photo spots that will make you want to snap a picture. Capture special commemorative photos with your dog against a backdrop of nostalgic scenery.

■ Seeking Exhibitors and Sponsors

We are currently looking for exhibitors and sponsors to help liven up the event. Please review the application guidelines and terms, and apply via the form below.

<Details>

・Exhibitor Overview: https://canva.link/wsvg110bt3llpri

・How to Apply: Please send an email to `seibu-petsmileproject@seibugroup.jp`.

・Deadline: April 30 (Thu) 23:59

* Applications are accepted on a first-come, first-served basis.

* Please note that recruitment will close once the capacity is reached, even before the deadline.

■ Event Participation Rules

To ensure the safety and health of all dogs, we have established the following rules:

【Conditions for Participation】

● Limited to dogs that have received a "Rabies Vaccination" and a "5-way or higher Combination Vaccine" within the past year (Vaccination certificates, exemption certificates, or antibody test certificates are acceptable).

【Park Etiquette】

● Leashes must be worn at all times except in the dog run area.

● Diapers are required in certain areas.

● Dogs must be accompanied by at least one person and must never be left unattended.

【Attractions & Shows】

● Dogs may only ride designated attractions.

● For safety, each attraction has specific boarding rules. Please follow the instructions of the staff.

● Please refrain from riding if your dog is prone to motion sickness or is not feeling well.

● Please be aware that some attractions and shows involve loud noises. Please understand this in advance.

There will be guests without dogs in the park on the day of the event. We ask for your understanding and cooperation so that everyone can have a fun and smiling day.

■ About the Seibu Pet Smile Project

"Making the time spent with pets richer and full of smiles."

The Seibu Pet Smile Project is a Seibu Group initiative born from this wish.

Since its launch in 2011, it has developed various services to support life and outings with pets as precious family members.

This year marks the 15th anniversary—the year of "15" (which can be read as "Wan-ko" or doggie in Japanese). We will continue to pursue services that enrich the lives of our customers and their pets more than ever before.

Through this event at Seibuen Amusement Park, we promise the best smiles for both dogs and their owners.

■ About FLAFFY Co., Ltd.

FLAFFY is a pet-life platform company born from the desire to "make the relationship between pets and humans flatter (more equal)."

They operate one of Japan's largest pet media outlets (3 million monthly visitors), host large-scale outdoor pet events, and provide comprehensive support for pet owners, including product development, strategic planning, SNS management, and promotion.

○ Inquiries regarding collaborations or event supervision:

FLAFFY Co., Ltd. Contact: `customer@flaffy.me`

■ Business Hours

May 15 (Fri) – May 17 (Sun): 10:00 – 17:00

* For details, please check the "Business Hours" section of the website.

https://www.seibuen-amusement-park.jp/information/

* Contents are subject to change or cancellation without notice. Please understand this in advance.

* Images are for illustrative purposes only.

* Prices include tax.

○ Customer Inquiries

■ Regarding the Event (Wan Wan Seibuen Amusement Park Event Office):

`seibu-petsmileproject@seibugroup.jp`

■ Regarding Seibuen Amusement Park:

Seibuen Amusement Park Call Center: TEL (04) 2929-5354

[Hours: 30 minutes before opening until closing time]