Resona Group Announces 'Unmelting Passion Award presented by Rock Ice®' for B.LEAGUE 2026-27 Season

Kokubo Seihin Reizo Co., Ltd. (KOKUBO Group, Yachiyo City, Chiba Prefecture, President: Toyoji Sakai) announces, together with its partner Japan Professional Basketball League (B.LEAGUE, Bunkyo City, Tokyo, Commissioner: Shinji Shimada), the implementation of the 'Unmelting Passion Award presented by Rock Ice®' for the Resona Group B.LEAGUE 2026-27 season, along with the联动 campaign, the SNS campaign '#RockIcePhotoCampaign'.

To ignite fans' unyielding passion and energize the league even during the off-season, the SNS campaign '#RockIcePhotoCampaign' will be held on Instagram from Monday, July 13, 2026, to Sunday, September 20, 2026.

● Overview of the Rock Ice® Photo Campaign

A campaign where participants can win prizes such as player-signed jerseys through a lottery.

【How to Participate and Post】

① Follow the official Rock Ice® Instagram account (@rockice_kokubo)

② Take a photo featuring a Rock Ice® glass and your favorite team's merchandise, then post it on your Instagram feed with the hashtags: #RockIcePhotoCampaign #YourFavoriteTeamName

【Winner Notification】

Winners will be notified via Instagram Direct Message (DM) from the @rockice_kokubo account by Friday, October 2, 2026.

Winners must respond to the DM with their contact information.

【Official Rock Ice® Instagram (@rockice_kokubo)】

https://www.instagram.com/rockice_kokubo?igsh=MXFrajJvaGh5ZGo2cg==

【Important Notes for Submission】

※ Stories and Reels are not eligible

※ Posts from private (locked) accounts are not eligible

※ Multiple posts per account are allowed, but each winner will be selected only once

【Prizes】

1st Prize: Player autographed official jersey – 5 winners

2nd Prize: Player autographed towels and other merchandise – 132 winners

● About the 'Unmelting Passion Award presented by Rock Ice®'

The 'Unmelting Passion Award presented by Rock Ice®' is inspired by the brand message of Kokubo Seihin Reizo's product 'Rock Ice®' – 'Unmelting Passion'. It honors the club that achieves the largest comeback victory (by point difference) in a monthly league game. Now in its second year, the most passionate comeback performance of the season will be recognized at the 'B.LEAGUE AWARD SHOW' after the season concludes.

Kokubo Seihin Reizo, part of the KOKUBO Group, launched 'crushed ice in a bag' under the brand name 'Rock Ice®' in 1973 and celebrated the 50th anniversary of Rock Ice® in October 2023. Beyond outdoor events, parties, and home drinking, Rock Ice®'s 'cooling power' is also utilized in sports and heatstroke prevention.

※ 'Rock Ice' is a registered trademark of Kokubo Seihin Reizo Co., Ltd.

● Participation in the 'Heatstroke Prevention Outreach Project'

Kokubo Seihin Reizo, representing the KOKUBO Group, has joined the 'Heatstroke Prevention Outreach Project' as a supporting company, further promoting heatstroke prevention initiatives using Rock Ice®'s cooling capabilities.

● About the KOKUBO Group

The KOKUBO Group operates factories and sales networks nationwide, delivering its flagship product 'Rock Ice®' to customers while striving to create a 'rich food culture nurtured by ice'. The group actively explores new possibilities for ice, engaging in social contribution activities such as sports icing and heatstroke prevention, and collaborating with professional and student sports teams.

Additionally, the KOKUBO Group promotes employee well-being by installing training gyms and has been certified as a 'Certified Health Management Company 2026 (Small and Medium Enterprise Category)'. The group will continue to prioritize health maintenance and improvement as a core business objective, striving to create a better workplace.

≪Corporate Overview≫

Company Name: Core Kokubo Holdings Co., Ltd.

Address: R.I.C. Building 9F/10F, 3-36-30 Honcho, Funabashi City, Chiba Prefecture

President & CEO: Ryuhei Kokubo

Established: May 2016

Group Website: https://kokuboice.co.jp/

≪Group Companies≫

Company Name: Kokubo Seihin Reizo Co., Ltd.　・Higashi Nihon Kokubo Co., Ltd.　・Hokkaido Kokubo Co., Ltd.

Address: 1739-4 Murakami, Yachiyo City, Chiba Prefecture　・Tokai Kokubo Co., Ltd.　・Nishi Nihon Kokubo Co., Ltd.

President & CEO: Toyoji Sakai　・Kyushu Kokubo Co., Ltd.

Established: September 1969　・KOKUBO ROCK ICE (THAILAND) CO.,LTD. and others