satoshi yamawaki

An entrepreneur, based on Tokyo Japan. My company, Castalia Co., Ltd. produces educational digital content solutions, and Media management for learning. Studied at kokugakuin Univ. , Japan and CUNY(City University New York) Baruch College, NY, USA. Before coming back to Tokyo, I spent my great days in New York City almost 10 years.

Our latest released service is "goocus pro"
goocus pro is a learning tool of the era of smartphones designed on the concept of “Mobile & Social.”