Get ready for a massive four-day celebration of the next generation of Japanese indie and rock music with GRAND SLAM 2026. Taking place during the peak of Golden Week, this multi-venue circuit festival transforms Nagoya’s DIAMOND HALL and SPADE BOX into a hub for high-energy performances and breakthrough talent.
Let us make your trip effortless. From tickets and hotels to transport and local guides, we arrange everything for you or your group. Whether it’s a music festival in Tokyo or a business conference in Osaka, our custom travel service ensures you enjoy the event stress-free.
Contact Jasumo Now →The 2026 lineup is a “who’s who” of rising J-Rock and J-POP stars, featuring the infectious energy of Conton Candy, the emotional melodies of moon drop, and the powerful stage presence of groups like yutori and the shes gone. With a “circuit” format that allows fans to move between venues, GRAND SLAM 2026 offers a curated look at the sounds shaping the modern Japanese music scene. Whether you are catching a single day of your favorite band or opting for the “All-Day Pass” to experience the full festival marathon, this is the definitive Golden Week event for rock fans in the Tokai region.
Jasumo provide Concierge Ticket Service that assists international visitors in securing tickets that usually require many verifications. Submit your request through the Jasumo Contact Form by sharing your preferred date, venue, or performance, ticket type, and quantity. Once you’ve reviewed the event details, simply confirm your selection and our bilingual team will support you end-to-end, including Smart Ticket application and payment coordination via credit card, convenience store, or ATM.
Please note that ticket availability is not guaranteed. After receiving your request, we will first check real-time availability on the official ticket platform.
| Date | Venue | Featured Artists (Examples) |
| 2026/05/02 (Sat) | DIAMOND HALL & SPADE BOX | Conton Candy, moon drop, yutori |
| 2026/05/03 (Sun/Hol) | DIAMOND HALL & SPADE BOX | Full Lineup TBD |
| 2026/05/04 (Mon/Hol) | DIAMOND HALL & SPADE BOX | Full Lineup TBD |
| 2026/05/05 (Tue/Hol) | DIAMOND HALL & SPADE BOX | Full Lineup TBD |
| 5/2 – 5/5 | ALL-DAY PASS | Access to all performances |
Jasumo provide Concierge Ticket Service that assists international visitors in securing tickets that usually require many verifications. Submit your request through the Jasumo Contact Form by sharing your preferred date, venue, or performance, ticket type, and quantity. Once you’ve reviewed the event details, simply confirm your selection and our bilingual team will support you end-to-end, including Smart Ticket application and payment coordination via credit card, convenience store, or ATM.
Our dedicated team manages the entire process from initial inquiry to final delivery. This specialized support is particularly valuable for “Smart Ticket” events like GRAND SLAM, which require specific mobile app setups and Japanese phone number authentication. By handling these logistics on your behalf, we provide a reliable path to the festival while offering flexible payment options.
Jasumo offers a specialized facilitation service for foreign tourists and non-Japanese residents in Japan, assisting with ticket acquisition for cultural and entertainment events through authorized and official platforms. We are not a ticket reseller and do not sell tickets directly. Our role is to guide international customers through the official booking process and help overcome common challenges, including:
What is the U-22 ticket?
U-22 tickets are discounted passes for fans who are 22 years old or younger on the day of the event. To use this ticket, you must bring a valid form of ID that shows your date of birth (such as a Passport). If you forget your ID, you will be required to pay the price difference for a General Admission ticket at the door.
How does the multi-venue entry work?
With your GRAND SLAM wristband (exchanged for your ticket at the entrance), you can move freely between DIAMOND HALL and SPADE BOX. Please note that entry to specific performances is subject to venue capacity; if a venue is full, entry may be restricted until other fans leave.
Are there extra costs at the venues?
Yes. A separate drink fee is required upon entry. This is a mandatory charge in Japanese live houses and is typically paid in cash at the door when you receive your wristband.
How will I receive my “Smart Ticket” for the Nagoya show?
These are digital tickets delivered via a smartphone app. Jasumo handles the Japanese phone number authentication and technical registration required so your ticket is ready to be scanned when you arrive in Nagoya.
What is the policy for children?
Admission fees apply to all children aged 3 and older. Children under 3 may have restricted entry depending on the specific venue safety protocols for loud rock events.
From corporate teams to friends traveling together, we create tailor-made travel packages. Enjoy VIP access, curated itineraries, and full support from our local experts. Tell us your plans, and we’ll handle the rest.
Contact Jasumo Now →
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