Kapanlagi.com - Shocking news comes from the voice actor of Eren Yeager in the phenomenal anime series ATTACK ON TITAN, Yuki Kaji. The voice actor, who has had a long career in the anime industry, is reported to have chosen to leave the agency that has represented him in order to focus on developing his own AI Voice project.
This decision immediately caught the attention of anime fans, especially those who know Yuki Kaji through the various iconic characters he has voiced. This move is seen as a new chapter in his career, as well as showing his interest in the development of voice technology based on artificial intelligence.
Many fans are curious about the reasons behind this significant decision and what the AI Voice project he is developing will look like. Amidst the rapid advancements in technology in the entertainment industry, Yuki Kaji's move has sparked new discussions about the future of voice acting professions in the anime world. Reported by KapanLagi from various sources, let’s check out the full news.
1. Yuki Kaji Leaves Agency

photo on the stairs/Instagram @yuki_kaji_official
Voice actor Yuki Kaji, widely known for his role as Eren Yeager in the popular anime ATTACK ON TITAN, has announced an important decision. He will be leaving the talent agency Vims to fully pursue his innovative personal AI voice project.
This decision marks a new chapter in his career, shifting from traditional agency affiliation towards artistic and technological independence. His departure from Vims will officially take effect on April 8, 2026, after 13 years with the agency.
2. Yuki Kaji Develops New AI Voice Company

AI character/Instagram @yuki_kaji_official
Yuki Kaji's ambitious project will officially launch on April 9, 2026, where he will serve as the CEO of his new company, Soyogi Fractal. This AI Voice project is built around the voice synthesis software, Soyogi Soyogi, which specifically utilizes Kaji's own voice.
The software was developed after a successful fundraising campaign and in collaboration with the Cevio AI voice synthesis engine. The Japanese version of Soyogi Soyogi was released in November 2024, while English support was added in December 2025, expanding the reach for creators.
3. Limitless Creativity Vision at Soyogi Fractal

blue suit photo/Instagram @yuki_kaji_official
According to the company's website, the concept behind Soyogi Fractal stems from Yuki Kaji's desire to create a unique platform. This platform is designed for both professionals and amateurs to explore their creativity without constraints that hinder them.
In the software's self-introduction, its AI character states, 'I am AI, but I have many emotions.' This demonstrates Kaji's commitment to ensuring that AI technology can capture the nuances of human emotions, showcasing various tones for voice acting.
4. Harmony of Humans and AI in Yuki Kaji's Vision

in the middle of the chair/Instagram @yuki_kaji_official
Yuki Kaji states that as AI technology evolves, raising concerns about its impact on human-made art, his decision to be independent is driven by a hopeful vision. He envisions a future where 'humans and AI resonate together,' creating positive synergy.
Kaji deliberately places himself at the center of this technological development, taking control to shape the history of vocal expression. He believes that AI can be a tool that enriches, rather than replaces, human vocal art.
5. Protecting the Soul of the Human Voice Through the AI Voice Project

photo with an apple/Instagram @yuki_kaji_official
Yuki Kaji emphasizes his strong belief in the irreplaceable value of the 'soul of the human voice.' He states, 'I truly believe in, and want to protect, the irreplaceable value of the 'soul of the human voice,' something that can only be created by living people.'
This statement underscores his commitment to preserving the essence of humanity in vocal art. Kaji will complete all his remaining projects with Vims agency by April 8, 2026, making Soyogi Fractal his 'living work.'
6. Call for AI Regulation

with red apple fruit/Instagram @yuki_kaji_official
Previously, in 2024, Yuki Kaji was among 26 Japanese voice actors who, along with the Japanese Actors Union, called for regulations regarding the use of generative AI. This call specifically highlighted audio and visual content that imitates their voices without permission.
In the fourth campaign video, Kaji stated that passion comes from the human soul, and noted that fans should respect the creators. He also added that the use of AI without permission can hurt someone, emphasizing the importance of ethics.
7. The Brilliant Career Path of Eren Yeager's Voice Actor

meeting fans/Instagram @yuki_kaji_official
If counted including his working period at Vims and previous agencies under the same group, Yuki Kaji has spent a total of 22 years affiliated with the company. During his long tenure, Kaji has portrayed various important roles that have carved his name in the anime industry.
Some of his iconic roles include Shoto Todoroki in MY HERO ACADEMIA, Kenma Kozume in HAIKYUU!!, Meliodas in THE SEVEN DEADLY SINS, and of course, Eren Yeager in ATTACK ON TITAN. Kaji is also the first and only voice actor to win the 'Best Leading Actor' award at the Seiyu Awards two years in a row.
8. FAQ
Who is Yuki Kaji? Yuki Kaji is a renowned Japanese voice actor widely known for his role as Eren Yeager in the anime series ATTACK ON TITAN, as well as other characters like Shoto Todoroki in MY HERO ACADEMIA and Meliodas in THE SEVEN DEADLY SINS.
Why did Yuki Kaji leave his agency? Yuki Kaji decided to leave Vims agency to fully focus on his ambitious personal AI Voice project, Soyogi Fractal. This decision was made to expand possibilities as a voice actor and shape the future of vocal expression in the digital age.
What is Soyogi Fractal? Soyogi Fractal is a new company founded by Yuki Kaji, where he serves as CEO, to develop AI Voice projects. This project centers around a voice synthesis software called Soyogi Soyogi, which uses Kaji's own voice, aiming to create a platform for creators to innovate without limits.
What is Yuki Kaji's vision regarding AI Voice? Yuki Kaji envisions a future where 'humans and AI resonate together,' utilizing technology as a tool to enrich human vocal art, rather than replace it. He is also very concerned about protecting the 'soul of the human voice' and advocates for ethical regulations in the use of generative AI.
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Disclaimer: This translation from Bahasa Indonesia to English has been generated by Artificial Intelligence.