At Seikukai, our teaching team is led by a representative with over 36 years of martial-arts experience and instructors with professional fighting careers,
with instructors matched to each generation — kids, juniors and adults.
We pass on “the power of self-discipline” and “a caring heart,” together with solid technique.
Kosho Tanaka
TANAKA YUKINAO
Representative of SOL inc. / Representative of Seikukai / Chair of the International Combat Karate Federation
The third-generation head of Seikukai (founded 1977), teaching adults, kids, kickboxing and personal training across the Ikeda, Kawanishi and Takarazuka branches. Over 36 years of martial-arts experience. He advocates “Combat Karate (Jaket MMA)” and focuses on hosting competitions and training instructors.
Sho Koike
SHO KOIKE
Personal Trainer / Professional Kickboxer
He joined Seikukai as a youth member and debuted as a professional kickboxer. After gaining ring experience in events such as DEEP☆KICK, he moved to professional boxing, and in 2025 returned to professional kickboxing at Shooto. Drawing on extensive competitive experience, he tailors his instruction to each person — from beginners to those who want to get seriously strong.
Takumi Yamashita
KOU YAMASHITA
Assistant Staff
Supports the classes one day a week. He assists in the kids’ and adults’ classes, helping create an environment where everyone can focus on training with peace of mind.
Akari Sakai
AKARI SAKAI
Assistant Staff
A high-school staff member who has trained at Seikukai for many years. She mainly supports the kids’ classes, assisting with instruction from a child’s point of view.
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Fuwa Kawakami
FUWA KAWAKAMI
Assistant Staff
A high-school staff member who has trained at Seikukai. As an assistant in the kids’ classes, she helps create an environment where children can focus on training with peace of mind.