Earth hacks × Hello! Project Launches Decarbonization Stamp Rally with Special Unit DECA!BEAT

Earth hacks Inc. (Headquarters: Shibuya-ku, Tokyo; CEO: Sumito Sekine; hereinafter 'Earth hacks'), a consumer co-creation platform that develops decarbonization-related products, services, and initiatives based on public feedback, announces the launch of a participatory stamp rally campaign titled 'DECA!BEAT with You! Decabo MISSION vol.1' starting Thursday, July 9, 2026. This initiative is conducted in collaboration with DECA!BEAT (Decabeat), a special unit formed by one future-oriented member each from seven groups within Hello! Project. The campaign enables participants to enjoyably practice decarbonization through everyday actions.

The campaign sets environmentally considerate daily behaviors as 'Decabo MISSIONS.' By challenging these missions and collecting stamps, participants can experientially understand the connection between daily choices and decarbonization in a fun way. Additionally, inspired by the lyrics of the collaboration song 'Waccha☆Future,' large bonuses (rewards) will be progressively unlocked based on the total number of Decabo MISSION actions achieved collectively by all participants.

【Background of the Initiative】

In March 2026, Earth hacks co-created with Up-Front Group to form the special unit DECA!BEAT (Decabeat), bringing together next-generation members from seven Hello! Project groups who will lead the future of our planet. Through the collaborative song 'Waccha☆Future,' the initiative aims to raise awareness of 'Decabo' and spread the Decabo movement across the idol industry and society at large.

The current campaign, 'DECA!BEAT with You! Decabo MISSION vol.1,' is a participatory project designed to make decarbonization actions enjoyable and accessible in daily life. Beyond simply learning about 'Decabo,' the goal is to help participants feel decarbonization as a personal and familiar issue through their daily actions.

【Reference Information】

For more details on the 'DECA!BEAT (Decabeat)' initiative by Earth hacks × Hello! Project, please visit the dedicated website:

DECA!BEAT Official Website

https://co.earth-hacks.jp/decabeat/

Overview: DECA!BEAT with You! Decabo MISSION vol.1

This stamp rally is a participatory initiative that allows anyone to easily and enjoyably practice decarbonization actions by engaging in 'Decabo MISSIONS'—environmentally conscious behaviors that can be practiced in daily life.

【How to Participate】

① Access the Platinumaps platform

② Take on a Decabo MISSION

③ Complete the mission to earn a stamp

④ Unlock big bonuses (rewards) based on the total number of actions achieved by all participants

【About the Decabo MISSIONS (7 types total)】

The campaign defines the following seven easily practicable eco-friendly actions as 'Decabo MISSIONS':

01: Use stairs instead of elevators when moving

02: Sort garbage for recycling

03: Use a reusable shopping bag when shopping

04: Eat fish instead of beef

05: Use a reusable water bottle

06: Buy 2L of water in a single PET bottle

07: Eat tamago kake gohan (raw egg on rice)

Participants can enjoyably realize how small daily choices contribute to environmental care.

【Rewards】

Inspired by the lyrics of the collaboration song 'Waccha☆Future,' the following big bonuses (rewards) will be unlocked based on the total number of actions collectively achieved by all participants:

・3,000 actions: Release of the 'Waccha☆Future' DANCE PRACTICE video!

・5,000 actions: Release of new visuals!

・10,000 actions: Release of a SPECIAL OFFSHOT video!

Reflecting the song's message—'Even small things, if steadily accumulated, will surely lead to a big bonus'—this campaign allows each individual's small actions to contribute to a significant collective achievement.

【Campaign Details】

・Campaign Name: DECA!BEAT with You! Decabo MISSION vol.1

・Organizer: Earth hacks Inc.

・Duration: Starting July 9, 2026 (Thursday)

・Platinumaps URL (for participation): https://platinumaps.jp/d/deca-beat?sr=1796

【Campaign Inquiry Desk】

Email: [email protected]

Operating Period: Starting July 9, 2026 (Thursday)

Hours: Weekdays 10:00–17:00 (excluding weekends and holidays)

About the Co-Creation Platform 'Earth hacks'

'Earth hacks' operates a co-creation platform connecting consumers—especially Gen Z—with companies and local governments to realize a decarbonized society. The platform provides organizations with its unique 'Decabo Score,' which displays CO2 reduction rates (%) compared to conventional products, promoting the visibility and adoption of environmentally valuable goods. Earth hacks enables consumers to contribute to decarbonization in an enjoyable way. Additionally, the platform runs initiatives such as 'Decabo Challenge,' where companies and students co-create through real business challenges, and 'Earth hacks for Local,' a solution for administrative bodies, accelerating decarbonization from multiple angles.

Website: https://co.earth-hacks.jp/

Instagram: https://www.instagram.com/earthhacks.jp/

X: https://x.com/Earthhacks2023

TikTok: https://www.tiktok.com/@decarbo46