Kim Sejeong, the multi-talented superstar known for her powerful vocals and captivating performances, is returning to the stage with her 2026 fan concert titled “Tenth Letter.” Originally rising to fame through the survival show “Produce 101” and groups like I.O.I and gugudan, she has successfully established herself as a top-tier solo artist and a beloved actress in world-renowned K-dramas. This concert series serves as a heartfelt tribute to her fans, blending her emotive ballad performances with upbeat hits and interactive fan segments.
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 Yokohama performance is particularly special as it takes place at the state-of-the-art KT Zepp Yokohama. Fans can expect a high-quality production that highlights Sejeong’s vocal versatility and her genuine connection with the audience. With a focus on intimate storytelling and live musical mastery, the “Tenth Letter” tour is an essential event for “Sesang” and K-pop enthusiasts looking to witness one of Korea’s most versatile entertainers in a premier Japanese live setting.
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. If tickets are available, we’ll make every effort to secure them for you. If they are sold out, don’t worry — we can also source tickets through trusted and verified resale marketplaces in Japan, helping you get the best possible seats.
| Date | Venue | Seat Types |
| 2026/3/14 (Sat) 18:00 Start | KT Zepp Yokohama (Kanagawa) | All reserved seats |
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 events utilizing “Smart Tickets,” which often require specific mobile app setups and Japanese phone number authentication. By handling these logistics on your behalf, we provide a reliable path to your favorite shows while offering flexible payment options that suit your travel needs.
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 makes the Yokohama performance special given the date?
The concert falls on March 14th, which is White Day in Japan. To celebrate, a special chocolate distribution event will be held after the show where the artist will personally hand out chocolates to the audience.
What is the “Smart Ticket” system used for this event?
The event uses the “Sma Ticket” system, which delivers digital tickets directly to your smartphone. This requires a compatible Japanese ticketing app and typically involves a verification process that our concierge service can assist with.
Are there any age-related restrictions for attending the fan concert?
Tickets are required for all attendees aged 3 and over. Children under the age of 3 are not permitted to enter the venue, so please keep this in mind when making your travel and booking plans.
Is the drink fee included in the ticket price for KT Zepp Yokohama?
No, the ticket price does not include the mandatory drink fee. All attendees must pay for a separate drink voucher in cash at the venue entrance, which is a standard requirement for Zepp venues in Japan.
What should I do if the application period has already ended?
If the general release period has closed, our team can still assist by searching through trusted and verified resale marketplaces in Japan. We aim to help you secure valid seating even for highly popular sold-out 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.
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