Yuki Kaji’s Soyogi Fractal Culminates in Soyogi EXPO Visual by Kohei Horikoshi

Key Facts

• Soyogi EXPO will take place on March 8, 2026, at Tokyo Garden Theater.
• The event marks the culmination of the Soyogi Fractal project.
• The project centers on Soyogi Soyogi, a voice synthesis character based on Yuki Kaji's voice.
• Kohei Horikoshi created the event's key visual.
• Soyogi Soyogi will perform with Yuki Kaji through reading and duet singing.

Yuki Kaji’s 3D LIVE event Soyogi EXPO is set for March 8, 2026, at Tokyo Garden Theater. The event represents the conclusion of his voice AI project Soyogi Fractal, which features the character Soyogi Soyogi. A newly illustrated key visual by My Hero Academia creator Kohei Horikoshi was also unveiled.

What Soyogi EXPO Announced

Soyogi EXPO is a 3D live entertainment event scheduled for March 8, 2026, at Tokyo Garden Theater. It concludes Soyogi Fractal, a voice AI project created by voice actor Yuki Kaji in commemoration of his 20th career anniversary.

The project is built around Soyogi Soyogi, a voice synthesis character derived from Kaji's voice. At the event, Soyogi Soyogi will appear in 3D form and perform live on stage with Kaji, presenting reading performances and duet songs. The stage aims to embody a real-world expression of co-creation between AI and humans.

Several notable artists will also contribute newly composed songs for the event, expanding Soyogi Soyogi’s identity through music. Kaji stated that the fusion of analog voice acting and digital technology creates a form of performance unique to the present moment.

Details of Soyogi Fractal and Bon Soyogi

Soyogi Fractal is a creative project initiated by Yuki Kaji, featuring the AI character Soyogi Soyogi, developed using voice synthesis based on Kaji’s voice. The project was launched with the aim of enabling creators—regardless of professional status—to freely collaborate and build works together without constraints.

The concept behind the name “Fractal” reflects Kaji’s vision of creators with shared ideals coming together to form a larger, unique structure—similar to how fractal patterns emerge from repeating forms. The project emphasizes collaboration among like-minded individuals to create something new through collective expression.

Soyogi EXPO is the first real-world performance to embody this ideal, showcasing the collaborative potential of AI and humans in a live format.

Key Visual and Comments from the Creators

The key visual for Soyogi EXPO was drawn by Kohei Horikoshi, the manga artist behind My Hero Academia. In a statement, Horikoshi said he was inspired by Kaji’s passion for the project and aimed to give the virtual character Soyogi Soyogi a dynamic, expressive presence.

He also noted that while respecting the delicate image designed by Mr. Yoneyama, he tried to infuse the illustration with purpose and meaning as the creator of My Hero Academia. The visual was released together with the event announcement.

Kaji commented that when cutting-edge digital tools intersect with analog voice performance, they can produce something that is neither replication nor simulation, but a fleeting expression unique to that moment. He described Soyogi EXPO as the first major milestone for Soyogi Fractal and the beginning of new creative directions.

FAQ

Q: When is Soyogi EXPO scheduled?
A: It will take place on March 8, 2026, at Tokyo Garden Theater.

Q: What is Soyogi Fractal?
A: A voice AI project by Yuki Kaji featuring the character Soyogi Soyogi, developed using his own voice.

Q: Who drew the visual for Soyogi EXPO?
A: Kohei Horikoshi, the creator of My Hero Academia.

Q: What kind of performances will Soyogi EXPO feature?
A: It will include live reading and duet performances by Yuki Kaji and Soyogi Soyogi.

Q: Who planned the Soyogi Fractal project?
A: The project was conceived and initiated by Yuki Kaji.

Source : ORICON NEWS