Tetsuya Komuro, Representative Director of Our Subsidiary, Participates in School Song Production Project Utilizing AI Technology as a Visiting Senior Researcher at RIKEN

We are pleased to announce that Tetsuya Komuro, Representative Director of our subsidiary Pavilions Co., Ltd. (Minato-ku, Tokyo) and SOUND PORT Co., Ltd. (Minato-ku, Tokyo), has participated as a Visiting Senior Researcher at the National Institute of Advanced Industrial Science and Technology (RIKEN) in a school song production project utilizing AI technology.

1. Project Overview This project, led by a research team including RIKEN Team Director Masatoshi Hamanaka, produced the school song for "Kuwana City Tado Academy," a combined elementary and junior high school set to open in April 2026 in Kuwana City, Mie Prefecture, by incorporating AI technology. Mr. Komuro cooperated with this project as a Visiting Senior Researcher at RIKEN, participating in the selection of one song suitable for the school song from four AI-generated candidate songs.

2. Production Process (1) Lyrics Creation An AI model that generates lyrics from keywords was utilized. The process involved repeated cycles of human editing and AI lyric generation to enhance completeness. (2) Composition A system was built to rewrite parts of a song created by a human composer with melodies proposed by AI. Children from Kuwana City used this system to create musical materials. (3) Selection and Finalization The candidates were narrowed down using AI technology from Kyushu University that analyzes the harmony between lyrics and melody. Composers from Tokyo University of the Arts finalized the four candidate songs. Mr. Komuro participated in the final selection of one song suitable for the school song.

3. Participating Institutions National Institute of Advanced Industrial Science and Technology (RIKEN): Project supervision and AI composition system development Kyushu University: AI technology for analyzing harmony between lyrics and melody Tokyo University of the Arts: Finalization of candidate songs (composition) Students of Kuwana City Tado Academy: Creation of melodic materials using the AI system

4. About Tetsuya Komuro

Tetsuya Komuro serves as the Representative Director of our subsidiaries Pavilions Co., Ltd. and SOUND PORT Co., Ltd. Our group is engaged in music and entertainment business development, including the production of the three-member girl music unit "OVAL SISTEM" and the overall production of the DMM short drama "Chika Idol no Houteishiki."

【Pavilions Co., Ltd.】 Location: Minato-ku, Tokyo Representative: Tetsuya Komuro, Representative Director Business Activities: Planning and production of music and entertainment businesses, etc.

【SOUND PORT Co., Ltd.】 Location: Minato-ku, Tokyo Representative: Tetsuya Komuro, Representative Director Business Activities: Ownership and management of copyrights, publication rights, patent rights, trademark rights, etc.

【THE WHY HOW DO COMPANY Co., Ltd.】 Location: 3rd Yamada Bldg., 22 Aizumi-cho, Shinjuku-ku, Tokyo Established: July 2004 Listed: October 2006 Tokyo Stock Exchange Standard (3823) Representative: Shingo Kameda, Representative Director and President Business Activities: Support for new business launches, M&A and investment strategies, management guidance for subsidiaries URL: https://twhdc.co.jp

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