Yoko has written books since 1986. She has more than 80 books to her credit, such as "Dreamweaver Toranomaki","Photoshop Working Techniques Effectively & Efficiently"(Mainichi Communications Co.,Ltd.) and "10 days class of Dreamweaver CS3 for beginners"(Shoeisha Co.,Ltd.). She is also an instructor in Aerobics Dancing.

She found Mind Map in November, 2002. This led her to change how she used head, and her books describe her technique sufficiently.
Recently she has enjoyed completing the"Mind Map of muscle".

She is representative of Aqua Design Studio.She earned a BA in literature from Chuo University.