Work With Sijo
Hire Me
Waysun "Johnny" Tsai is available for hire — as a martial arts writer, a self-defense and combatives instructor, a custom knife designer, and a technical consultant. Whatever you're building, bring on a lifetime of real-world experience.
Featured Services
What I Do
Freelance Writer
Published author and martial arts writer for hire — books, magazine features, technical manuals, and ghostwriting on self-defense, martial arts, and combatives. Clear, credible, and battle-tested on the page.
See Writing →
Self Defense Training
Bring real-world combatives and self-defense to your group, school, department, or event — from single seminars to ongoing programs. Training that holds up when it actually counts.
See Training →More Ways To Work Together
Also Available For
Let's Talk
Ready To Work Together?
Tell me what you have in mind — a seminar, a book, a blade, or a project — and let's make it happen.
Contact Me →