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About Sion Inc.



SION stands for S (South Pole), I (myself), O (Earth) and N (North Pole). 

I used to be unwell and anxious for long time. However, since I started to use sound and the colours  in my life,  my life has positively changed. I’d love to share this knowledge with other people and be happy together!  So I created Sion Inc.

Let’s celebrate our lives and fill our hearts with love, gratitude and peace.

With lots of love and gratitude,  


Sion Kazu


Sion Kazu / Singing Ring® Developer, Sound therapy instructor.

Sion Kazu / Singing Ring® Developer, Sound therapy instructor.Representative Director of Singing Ring Association, Councillor of International Society for Personalized Medicine. Graduated from Shizuoka University Graduate School, Sophia University Counselling Institute, Master of Education. 


After working as a clinical psychologist and psychological counsellor, she lived in Los Angeles and New York for eight years, experiencing her eldest daughter's illness and 9/11 there before returning to Japan. In December 2004, she developed the healing instrument Singing  Ring® Shikkoku that plays the ultimate harmonic overtone. She has also created original sound therapy using miraculous resonance phenomena and is committed to training therapists and performers both in Japan and overseas. In 2019, she announced the world's first lapis lazuli colour Singing Ring® Luli using lapis lazuli and Urushi lacquer. Her academic research with universities has also recognized its miraculous sound effects, contributing to the well-being of the body, mind of many people.
Original CDs: "Divine Sound",  "Sound Myth"

Books: "Full Harmonic Overtone Therapy CD Book" (BAB Japan), "Full Harmonic Overtone Therapy that Boosts Immunity Just by Listening" (Forest Publishing), and others.


Company philosophy

By harmonising people, things, and places, we create a world where resonance occurs.





Company Name

Sion Inc.


October 2003



Okayama Head Quarters
1038 Kunitomi, Naka-ku, Okayama-shi, Okayama, 703-8236
Phone: 086-239-3912 Fax: 086-239-3913

Tokyo Kagurazaka Salon
26-9 Wakamiya-cho, Shinjuku-ku, Tokyo, 162-0827

Phone: 080 6608 3690



Sion Kazu



Business Description

① Image and Colour Consulting
② Manufacture, research, and selling of an acoustic instrument Singing RingⓇ
③ Organizer of seminars, lectures, and events related to colour and sound.
④ Spreading sound healing modality for health and beauty enhancement, and management of the healing salon.
⑤ Planning, creating, and selling of CD, DVD, and lecture videos.
⑥ All the other work related to above.

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