Sachiko, or Sachi, was born in Nagasaki, Japan. After working as a nurse at hospitals for 15 years, Sachi founded a care and welfare center. Sachi, as a care instructor, teaches at professional schools and other institutions. Sachi also runs a company providing training programs and assisting qualification acquisition related to care services. From 2010, Sachi has been holding Hemi-Sync® seminars in Nagasaki and Fukuoka and has written books on Hemi-Sync. Sachi also works as a therapist offering aura healing, Reiki healing and other therapies.