Ryohei Nuka is the CFO of DEA. Having spent the first 15 years of his life in Los Angeles, California, U.S.A and graduated from the Faculty of Science and Engineering at Sophia University, Mr. Nuka worked for a major Japanese SIer company, and then for the finance division of Dresdner Kleinwort Securities, the securities division of Dresdner Bank, one of the then major banks in Germany.