[Seibu-en Amusement Park] 3 Days Only! Enjoy Seibu-en Amusement Park Filled with Heartwarming Happiness with Your Dog! Deepen Your Bond with Your Dog Through Various Contents! "Wan Wan Seibu-en Amusement Park" May 15 (Fri) - May 17 (Sun), 2026

Seibu-en Amusement Park (Location: Tokorozawa City, Saitama Prefecture, General Manager: Tomohiro Nishida) will hold a special event "Wan Wan Seibu-en Amusement Park" from Friday, May 15 to Sunday, May 17, 2026, allowing visitors to enjoy Seibu-en Amusement Park with their beloved dogs for the first time since its renovation. This event focuses on the experience of "togetherness" with your dog in the extraordinary space of an amusement park. You can enjoy a variety of contents to deepen your bond with your dog, including accompanying them on attractions where they are usually not allowed, a "Yūhi no Oka Dog Run" where you can enjoy based on size, a "Splash Pool" to get a head start on summer, nostalgic photo spots, and a "Mini Marche" gathering select pet brands. Please come to this experiential event at Seibu-en Amusement Park to deepen your bond with your dog and foster their social skills. ■ Contents - Accompanying rides on attractions - Dog Run - Splash Pool - Mini Marche - Photo Spot ■ Dog Fee: 1,100 yen *On May 15 (Fri) only, you can enter for the same-day fee of 600 yen. *Purchase tickets by the day before for the advance price of 500 yen. ■ Sales Location: Information will be available on the website from April 16 (Thu). https://www.seibuen-amusement-park.jp/ticket/ 1. Enjoy Attractions Together with Your Dog! Within the park, you can enjoy a total of 5 attractions (Merry-Go-Round, Challenge Train, Leo and Liya's Jungle Dance Party, Fly! Leo the Jungle Hero, Leo and Liya's Sunset Train) together with your dog. Under the supervision of veterinarians, a safe riding environment has been prepared for dogs, supporting the creation of special memories by sharing the views from the attractions with the whole family. 2. Race Through Exhilaratingly! "Yūhi no Oka Dog Run" A special dog run will appear for a limited time during this event. You can play off-leash in a turf area that is gentle on your dog's paws and legs. It's the perfect place to create memories with family and friends. 3. Get Excited with Water Splashes! "Splash Pool" A "Splash Pool" exclusively for dogs will be available, perfect for the hot season. You can enjoy watching your active dog play in the shallow water or chase toys. 4. Supervised by FLAFFY! Mini Marche in Seibu-en Amusement Park This mini-marche, brought to you with supervision from FLAFFY Inc. (Location: Nakano City, Tokyo, Representative: Chisa Hirota), which has successfully organized numerous pet events such as "Japan Wanko Festa," will feature a selection of premium pet brands. You'll find carefully chosen food, care products, and dog goods that will enrich your life with your dog, all gathered at Seibu-en Amusement Park. 5. Photo Spots Throughout the park, you'll find photo spots that will make you want to snap pictures. Capture special commemorative photos with your dog against a backdrop of nostalgic scenery. ■ Exhibitors and Sponsors Wanted We are looking for exhibitors and sponsors to help make this event even more exciting. Please review the application guidelines and terms and conditions in advance, and if you agree, please apply early via the form below.

- Exhibitor Overview: https://canva.link/wsvg110bt3llpri - Application: Please send an email to seibu-petsmileproject@seibugroup.jp. - Application Deadline: April 30 (Thu) 23:59 *Applications will be accepted on a first-come, first-served basis. Those interested are encouraged to apply early. *Please note that applications may close before the deadline if the capacity is reached. ■ Event Participation Rules This event has established the following rules, prioritizing the safety and health of your dog. 【Participation Requirements】 ● Dogs that have received "Rabies Prevention Vaccination" and "5-in-1 or higher combination vaccination" within the last year are eligible. (A certificate of exemption or antibody test certificate is also acceptable). 【Park Etiquette】 ● Please keep your dog on a leash at all times, except in the dog run area. ● Diapers are required in some areas. ● Please ensure at least one person accompanies your dog and never leave them unattended. 【Attractions/Shows】 ● Dogs can only ride on designated vehicles. ● For the safety of your dog, there are riding rules for each attraction. Please follow the instructions of the staff. ● If your dog is prone to motion sickness or is not feeling well on the day, please refrain from accompanying them. ● Please be aware that some attractions and shows may produce loud noises. Customers without dogs will also be attending on the day. We ask for your understanding and cooperation so that everyone can have a happy and enjoyable day. ■ About the Seibu Pet Smile Project "Making time spent with pets richer and full of smiles." The Seibu Pet Smile Project is an initiative by the Seibu Group born from this wish. Since the launch of this initiative in 2011, we have developed various services to support the lives of pets, who are cherished family members, from daily living to outings. This year, which marks our 15th anniversary and is also the "15 (Wanko)" year, we will pursue services that enrich the lives of our customers and their pets even more than before. We promise the best smiles for dogs and their owners through this event presented by Seibu-en Amusement Park. ■ About FLAFFY Inc. FLAFFY is a pet life platform company born from the desire to "make the relationship between pets and humans more flat." They operate one of Japan's largest pet media outlets, visited by 3 million people monthly, host large-scale outdoor pet events where both pets and humans can enjoy together, and engage in produce businesses that provide comprehensive support for pet owners, including product development, planning, strategy design, SNS operation agency, and promotion. ○ For collaboration or event supervision requests/consultations, please contact: FLAFFY Inc. Contact: customer@flaffy.me ■ Business Hours May 15 (Fri) - May 17 (Sun)・・・・10:00 - 17:00 *For details, please check the "Business Hours" on the website. https://www.seibuen-amusement-park.jp/information/ *Contents are subject to change or cancellation without prior notice. *Images are for illustrative purposes only. *Prices are tax-inclusive. ○ Customer Inquiries ■ Inquiries regarding the event (Wan Wan Seibu-en Amusement Park Event Office) seibu-petsmileproject@seibugroup.jp ■ Inquiries regarding Seibu-en Amusement Park Seibu-en Amusement Park Call Center TEL. (04) 2929-5354 [Reception Hours: 30 minutes before opening to closing time]