Kayoko Mimura

After graduating from Hokusei Gakuen Women's Junior College with a degree in English, she began studying Seishinryu Karate at the Yomiuri Culture School while working as an office worker.
She became the second trainee in the training program and was appointed head of the Sakaemachi Branch, completing the program in 2006. During an interview with Doshi Sports, she spoke of her dream of becoming a "female head instructor" in the future.
In 2008, she underwent a total gastrectomy due to stage IV stomach cancer. That same year, she became the first full-time employee of the NPO Seishinkai.
In 2009, she was appointed Shihan (Master Instructor).

Through her daily dedication to training, she became widely recognized as the Chairman's top student and successor. In 2012, she was appointed the second Head Instructor of Seishinkai Headquarters. She held the rank of Renshi 6th Dan in Seishinryu Karate-do.
She was a pioneer among female instructors in Seishinkai Karate-do, becoming Seishinkai's first female Shihan and female Head Instructor.
Fluent in English and capable of simultaneous interpretation, she served as Director of the International Department and hosted karate enthusiasts from overseas who visited Japan each year. In 2013, she traveled to Sri Lanka to teach karate.
In 2015, she was awarded Kyoshi 7th Dan. In addition to karate, she studied Okinawan Kobudo (weapons arts) and Iaido.
She served as Executive Director of the NPO All Japan Seishinkai and as Head Instructor and Director of the International Department at ISKF Headquarters, helping to build the foundation of Seishinkai.

On November 27, 2015, her cancer returned and she passed away at a young age. She was posthumously awarded 9th Dan in honor of her achievements. More than 800 members and others attended her funeral.
Her contributions are honored through her title of Honorary Head Instructor.
In 2016, a memorial monument and Seishinkai commemorative monument were erected at Fujino Seizan-en. Every year, memorial visits are held three times: during Golden Week, Obon, and November.