one room special collaboration project for "Grateful Yesterdays Tour 2026" members, limited to domestic performances, has been announced!
■ New Member & Friend Referral Campaign
During the “Grateful Yesterdays Tour 2026” domestic stadium tour, those who join back number official fan club “one room” gold key (annual membership) and visit the fan club booth at each venue will receive a special gift: an “one room original skeleton acrylic keychain”!
Even if you are already a "one room" gold key member, you will receive the same gift if you refer a friend (a new gold key member)!
■Exclusive to visitors! one room Lottery
This is a lottery exclusively for one room members, which can only be drawn near the live venue on the day of the performance.
For each performance, Gold Key (annual membership) members can participate twice, and Silver Key (monthly membership) members can participate once.
The prize displayed on the results page will be given to you on the spot that day.
■ Commemorative AR Camera
During the tour, we will be using back number app to implement an "AR camera" where you can take photos with the tour's key visual!
Anyone who has downloaded back number app can use this service, so whether you're attending the venue or not, please enjoy taking commemorative photos.
There's also a special AR frame design available exclusively for one room members!
Please share the photos you take on social media using the hashtag "#backnumberstadiumtour"!
■“Grateful Yesterdays Tour 2026” staff report
Staff members report on what the members were up to backstage and the exciting atmosphere of the venue!
• Movie: Updates will be posted on the "one room" website's movie section!
• App-exclusive real-time report "moment": On the day of the tour performance, we will post updates on the venue as time progresses and notify you via push notifications!
▼Click here for details on the collaborative project