[▲Polinky's "Secret Sticker Exchange Party"▲] Sticker exchange event held on July 5th to commemorate the launch of Koikeya's puffy stickers "Koikeya Potetto Sticker"

Koikeya Co., Ltd. (President: Akira Sato) held a "Koikeya Potetto Sticker Exchange Event" with Polinky (Jan) at the girls-only sticker exchange cafe "Sharepuku Harajuku Store" to commemorate the launch of "Koikeya Potetto Sticker," puffy stickers featuring the brand characters "Three Polinkys" from "Polinky" and "Grandma Hee (Hee Clan)" from "Kara Mucho." The event was held on July 5, 2026 (Sun).

"Koikeya Potetto Sticker" was born from a new project where orders were accepted on the Koikeya Online Shop starting at 12:00 PM on June 18, 2026 (Thu), and the product would only be commercialized if the target order number of 2,500 sets was achieved. Although the product's commercialization was officially decided after achieving the target order number in approximately 9 hours from its launch, as a preview before the scheduled shipping period for customers in September, Polinky (Jan) appeared at "Sharepuku Harajuku Store" to conduct a sticker exchange and interaction event with customers.

Participants expressed their delight with comments such as "Cute!" and "Let's exchange this!" making the event a great success.

Koikeya will continue to undertake various initiatives that break away from existing frameworks.

[Event Details] <Date and Time> Two sessions: July 5, 2026 (Sun) 14:30-15:50 and 16:00-17:20 <Location> Sharepuku Harajuku Store (2NS Building 5F, 3-23-23 Jingumae, Shibuya-ku, Tokyo) <Participant> Polinky Character Jan

<Content> ■ Customer Arrival ■ Introduction of Polinky Character Jan ■ Sticker Exchange with Polinky Character Jan (Koikeya Potetto Sticker) ■ Photo Session with Interested Customers ■ Event Conclusion (Gift of "Kofukuro Polinky")

[Product Details] ■ Product Name/Contents "Koikeya Potetto Sticker 2-Type Set (Polinky Theater & Hee Clan)" / 2 stickers ■ Price 1,240 yen (tax included) *Shipping fee 220 yen separately ■ Sales Period/Sales Channel June 18, 2026 (Thu) - July 13, 2026 (Mon) 5:00 PM / Koikeya Online Shop *Sales are only made if the target of 2,500 sets is achieved, which was met on June 18 (Thu). *Sales may end if the order limit is reached.

Koikeya Online Shop (URL) https://www.koikeya-online.jp/shop/g/g80626001-c/

● About "Sharepuku"

"Sharepuku" is a girls-only sticker exchange cafe with the concept of "sharing cuteness." It is gaining support, especially among Gen Z, as a space where natural communication arises from shared interests, such as bringing favorite stickers to exchange and showing off sticker albums. Since the opening of the Harajuku store in December 2025, it has gained attention with the spread of the "Shiru-katsu" (sticker activity) boom, and currently operates stores in Harajuku, Amerikamura, Nakazakicho, Nagoya Osu, Kobe, Yokohama, and Tachikawa. Sharepuku Harajuku Store Instagram: https://www.instagram.com/sharepuku_harajuku/

● Company Overview Company Name: Cloud N Co., Ltd. Representative: Yoshihiro Nishiyama, Representative Director Capital: 50 million yen Date of Establishment: June 20, 2013 Location: KN Shibuya Building 9F, 13-11 Udagawa-cho, Shibuya-ku, Tokyo Homepage: https://cloudn.co.jp Business Activities: Companion Seating Business: "Oriental Lounge" "ag" Pet Cafe Business: Samoyed Cafe "Al" "Cho! Samoyed" Other Businesses: "Sick!" "Shippou Maratan (FC)" "Sharepuku"

Major Subsidiaries: Mrk&Co., Ltd.: Operation of matching app "D3" Oriental Lounge Co., Ltd. (Korea): Operation of Korean stores

[Inquiries from General Customers] Koikeya Co., Ltd. Customer Center Tel. 0120-941-751 Reception: Monday-Friday 9:00-17:00 (excluding holidays)