The Japanese version of Sword x Staff (杖と剣の伝説) has launched its limited-time collaboration with the BOCCHI THE ROCK! anime. The event runs from August 16 through September 5, 2026 at 11:59 p.m. JST.
All four Kessoku Band members—Hitori Gotoh, Nijika Ijichi, Ryo Yamada, and Ikuyo Kita—appear as collaboration companions in the world of Kanstein. The crossover also includes an original story, music-themed mini-games, an event exchange shop, and a reward structure that allows active players to secure at least two collaboration characters without purchasing additional pulls.
Quick Summary
- Collaboration: BOCCHI THE ROCK! × Sword x Staff
- Japanese game title: 杖と剣の伝説
- Global title: Sword x Staff
- Service provider: BOLTRAY PTE. LTD.
- Format: Mobile idle RPG
- Japanese platforms: iOS, Android
- Business model: Free-to-play with in-app purchases
- Event begins: August 16, 2026
- Event ends: September 5, 2026 at 11:59 p.m. JST
- Service covered: Japanese version
- Collaboration characters: Hitori Gotoh, Nijika Ijichi, Ryo Yamada, Ikuyo Kita
- Hitori: Lead guitar
- Nijika: Drums
- Ryo: Bass
- Kita: Guitar and vocals
- Original story: ぼっち・ざ・ぼうけん！
- Story premise: Kessoku Band becomes stranded in Kanstein
- Mini-game: Band Practice
- Additional mini-game: Bocchi the Jump!
- Band Practice: Builds popularity through practice and street performances
- Bocchi the Jump!: Obstacle-avoidance mini-game
- Event shop: 物販コーナー
- Exchange rewards: Include a Kessoku Band T-shirt and Tsuchinoko Bocchi
- Login bonus: STARRY出勤簿
- Seven-day login reward: Ikuyo Kita
- Collaboration gacha: Kessoku Roulette
- Free tickets: Up to roughly 60 pulls through event participation
- Guarantee: At least one of Hitori, Nijika, or Ryo
- Minimum free collaboration characters: Kita plus at least one Kessoku Roulette character
- New character visuals: Released for all four Kessoku Band members
- Collaboration PV: Released
Announcement, PV, Google Play, and Collaboration Visuals
Kessoku Band Gets Stranded in Kanstein
The event's original crossover story is titled Bocchi the Bōken! (ぼっち・ざ・ぼうけん！).
It removes Kessoku Band from its familiar daily life and sends all four members into Kanstein, the fantasy world at the center of Sword x Staff.
Hitori, Nijika, Ryo, and Kita begin a new adventure alongside characters from the game, giving the collaboration an actual narrative framework rather than simply placing the four characters into a summon pool.
The promotional material also preserves each member's musical identity. Hitori is presented with guitar, Nijika with drums, Ryo with bass, and Kita as guitar-vocal.
Individual countdown visuals released ahead of the event use a poster-like format that emphasizes their respective instruments and positions within Kessoku Band.
Band Practice and Bocchi the Jump! Expand the Event Beyond Gacha
BOLTRAY has added several activities built specifically around the anime's identity.
Band Practice focuses on rehearsal and street performances, with players building the band's popularity through the mini-game.
The second confirmed activity, Bocchi the Jump!, takes a simpler obstacle-avoidance approach.
These mini-games feed into the broader event loop rather than existing only as standalone diversions. Missions tied to the story and activities reward items that can be spent in the collaboration exchange shop.
That allows BOCCHI THE ROCK!'s music and comedy elements to remain visible even inside an idle fantasy RPG.
Kessoku Band T-Shirt and Tsuchinoko Bocchi Join the Exchange Shop
The event includes a dedicated merchandise corner-style exchange shop, labeled 物販コーナー in Japanese.
Items earned from the crossover's missions can be traded for limited collaboration rewards.
Confirmed cosmetics include a Kessoku Band T-shirt and Tsuchinoko Bocchi.
This gives players progression goals outside character acquisition and directly references recognizable elements from the anime.
BOLTRAY has not announced whether these limited appearance items will return after the collaboration, so their availability is currently tied to the August 16–September 5 event window.
Seven Days of Login Rewards Give Everyone Ikuyo Kita
One of the collaboration's most accessible rewards comes from the STARRY attendance login bonus.
Logging in on a cumulative seven days during the event rewards players with Ikuyo Kita as a collaboration companion.
Kita therefore does not need to be obtained through random gacha pulls.
Her collaboration presentation keeps her established Kessoku Band role as guitar-vocal and her outgoing personality.
Because the requirement is cumulative rather than described as seven consecutive days, players have room to complete it before the collaboration ends.
Up to 60 Free Pulls Guarantee Hitori, Nijika, or Ryo
The remaining three members—Hitori Gotoh, Nijika Ijichi, and Ryo Yamada—are featured in the collaboration gacha Kessoku Roulette.
Event participation provides enough tickets for up to around 60 pulls.
The banner includes a guarantee system. By using the free tickets made available through the event, players are guaranteed at least one of Hitori, Nijika, or Ryo.
Combined with the free Ikuyo Kita login reward, active players can therefore secure at least two collaboration characters without purchasing additional pulls.
The free reward structure does not, however, guarantee all four Kessoku Band members.
Sword x Staff Is Built Around Idle Progression and More Than 200 Skills
Sword x Staff is a fantasy idle RPG in which players explore the world of Kanstein as an adventurer.
Combat can run automatically after players set up their skills and activation order, while idle progression continues to provide development materials.
Its class system allows players to advance through sword- or staff-based paths and switch jobs as their build develops.
The game advertises more than 200 skills that can be combined into different setups, alongside character customization and mobile-friendly exploration.
The Japanese version is available as a free-to-play title for iOS and Android.
Why This Matters
1) All four Kessoku Band members are part of the event roster
The crossover goes beyond costumes or brief cameos. Hitori, Nijika, Ryo, and Kita each receive their own collaboration presentation.
2) At least two characters can be earned without paid pulls
Kita comes from the seven-day login reward, while the free Kessoku Roulette tickets guarantee one of the other three members.
3) BOCCHI THE ROCK! references are worked into the event systems
Band rehearsals, street performances, jumping mini-games, the Kessoku Band T-shirt, and Tsuchinoko Bocchi all appear as gameplay or reward elements.
4) The crossover has an original story
Bocchi the Bōken! explains why Kessoku Band is in Kanstein instead of treating the collaboration characters as context-free gacha additions.
Collaboration Information
Additional confirmed details include:
- the collaboration began on August 16, 2026
- it ends September 5 at 11:59 p.m. JST
- the announced Japanese service is 杖と剣の伝説
- the game's global title is Sword x Staff
- iOS and Android are supported
- all four Kessoku Band members appear
- the original story is titled ぼっち・ざ・ぼうけん！
- Band Practice includes rehearsal and street performance elements
- Bocchi the Jump! is an obstacle mini-game
- the exchange shop is called 物販コーナー
- the Kessoku Band T-shirt is one limited cosmetic reward
- Tsuchinoko Bocchi is another confirmed reward
- seven cumulative login days reward Ikuyo Kita
- the collaboration gacha is called Kessoku Roulette
- players can receive enough tickets for around 60 pulls
- the guarantee awards at least one of Hitori, Nijika, or Ryo
- all four characters are not guaranteed solely through the announced free rewards
- an official collaboration PV has been released
- individual visuals for all four Kessoku Band members have been shown
- Sword x Staff uses idle progression and auto-battle
- players can change classes during progression
- more than 200 skills can be combined
- the Japanese Android version is available through Google Play
- the iOS version is available through the App Store
- event updates are posted through Sword x Staff Japan on X
- anime information is available from the official BOCCHI THE ROCK! website
Closing
The BOCCHI THE ROCK! x Sword x Staff collaboration brings the complete Kessoku Band lineup into Kanstein from August 16 through September 5, 2026, backed by an original crossover story, band-themed mini-games, limited cosmetics, and four collaboration companions.
Its reward structure is also relatively accessible. Ikuyo Kita comes from seven cumulative login days, while free Kessoku Roulette tickets guarantee at least one additional member from Hitori, Nijika, or Ryo.
- Sword x Staff Official X — Collaboration Launch, Event Period, and Collaboration PV
- BOLTRAY / PR TIMES — Collaboration Characters, Original Story, Mini-Games, Rewards, Login Bonus, and Gacha Guarantee
- YouTube — Official BOCCHI THE ROCK! x Sword x Staff Collaboration PV
- App Store — Official BOCCHI THE ROCK! Collaboration Event and Kessoku Band Story Premise
- Google Play — Official Japanese Game Listing, Collaboration Content, Platforms, and Game Systems
- Bocchi the Rock! Official Website — Official Anime and Kessoku Band Information
- 4Gamer — Collaboration Launch, Original Story, Mini-Games, Exchange Rewards, and Free Character Details
