Her main areas of practice are international and domestic M&A transactions, corporate restructuring and acquisition financing. She also has expertise in Japanese laws and regulations with respect to the telecommunications business. She was admitted to the bar in 2001 in Japan and in 2007 in New York. She was educated at the University of Tokyo (BS Econ, 1989), the University of Tokyo (LLB, 1997) and Harvard Law School (LLM, 2006). Hayashi worked at Mizuho Corporate Bank (former Industrial Bank of Japan) from 1989 to 1994 and at Davis Polk & Wardwell in New York from 2006 to 2007.