Welcome to STU48: Setouchi Racing Battle — the ultimate mobile gaming adventure inspired by Japan’s first wide-region idol unit, STU48, born from the vibrant heart of the Setouchi region spanning seven prefectures and one sea!

🔥 Step into the Rhythm of the Sea
Channel your passion for STU48 as you journey across the scenic coasts of Hiroshima, Okayama, Kagawa, Ehime, Tottori, Shimane, and Yamaguchi — where idol dreams meet high-speed rivalry on the racetrack.

🎯 Boost Your Idol’s Support Density!
In intense 7-player head-to-head battles, battle for your favorite member’s hearts and votes. Every race, every victory, and every close call helps increase their Support Density — a unique stat that reflects how deeply fans connect with their spirit.

As you rise through the ranks:

• Unlock exclusive character messages that reveal hidden thoughts and emotions.
• Trigger Card Awakenings that bring out new visual forms and dazzling abilities.
• Discover shared secrets only true fans will know — a bond deeper than the sea.

🎮 Race Online, Feel the Pulse!
Challenge real players worldwide in 7-player online multiplayer matches — no more just battling AI. With smooth, real-time competition, every race feels like a live idol event.

And here’s the dream:

• Some lucky fans may even race directly against actual STU48 members in special live events!
• Experience real-time reactions from idols as they cheer, laugh, or tease you on screen.

✨ Special Note: During limited-time “Setouchi Special Production Events,” members appear in unique racing scenarios — like a seaside dash on a ferry, a midnight sprint through a festival-lit tunnel, or a coastal drift race under cherry blossoms!

🕹️ Designed for One-Handed Thrills
With intuitive vertical screen controls, simple tap-and-glide mechanics, and smart Card Assist Displays, you can dominate the track even on the go.

Whether you’re on a ferry across the Inland Sea or waiting at a local station, the race is always on — and your idol is counting on you.

🌊 Join the Movement. Feel the Connection.
STU48 isn’t just music. It’s the heartbeat of a region. It’s the dream of a girl from Matsue chasing her future across the sea.

Now, through STU48: Setouchi Racing Battle, you’re not just a fan — you’re part of the journey.

👉 Download now and race for your idol’s soul across the seven seas!

Powered by AKB48 Group and STU48 Official Production Team
Available on iOS and Android — only on the Setouchi Express.