Yukiyo Suzuki is the Founder & Lead Advisor of Executive Japanese Communication Advisory (EJCA) and Representative Partner of YSG HOLDINGS G.K. She supports foreign professionals and refined hospitality teams in Japan with practical Japanese communication, professional presence, and trust-building.
Her background spans aviation, global business, healthcare-related IT and CRO companies, law firm environments, university education, Japan sales and alliance work within global team environments, executive management, and private helicopter guest support. Having lived and worked in New York for approximately 10 years, she brings a practical understanding of cross-cultural communication between Japanese and international business settings.
She has worked in environments where language, tone, timing, courtesy, and situational judgment directly affect trust. Her experience includes enterprise-level business communication, client-facing discussions, internal coordination, executive-level interactions, and premium service settings for international guests.
As a part-time lecturer at the University of Yamanashi, she teaches international students in engineering-related academic contexts. This experience also informs her ability to explain practical Japanese communication to non-native speakers in a structured and accessible way.
At EJCA, she provides advisory support that goes beyond language correction. Her approach helps clients choose words, responses, and communication styles that sound natural, professional, and trustworthy in Japanese business settings, including email, meetings, reporting, requests, hospitality interactions, and communication with Japanese colleagues, clients, and partners.

Keizo Korai has approximately 40 years of experience at the Japanese affiliate of a German pharmaceutical company, where he worked across a wide range of functions including sales, development, corporate planning, customer relations, and medical policy. His career includes assignments at the company’s German headquarters, as well as extensive experience in global meetings, international projects, and multicultural business environments.
At the age of 45, he was appointed as an executive officer and participated in management discussions for approximately 15 years. Through his work in both Japanese and global corporate settings, he has been deeply involved in decision-making, internal coordination, customer-facing communication, recruitment interviews, and talent development.
Since 2020, he has worked as a Japanese language teacher and business Japanese instructor, supporting foreign professionals, international students, job seekers, and corporate training participants in areas such as business documents, business email writing, professional conversation, business manners, interview preparation, and career-related communication.
He has supported learners from diverse national and cultural backgrounds, including the United States, Germany, Russia, Mexico, China, South Korea, Vietnam, and India. With a strong awareness of cross-cultural understanding, he brings practical experience in addressing pronunciation, expression, grammar, and communication tendencies that may arise from different native languages and cultural backgrounds.
At EJCA, he supports not only correct Japanese expression, but also the practical communication skills required to build trust in Japanese business settings. His advisory approach helps foreign professionals communicate more accurately, naturally, and confidently with Japanese companies, colleagues, clients, and business partners.

Hidetoshi Yanagihara is an EJCA Business Japanese Communication advisor with extensive experience in global financial markets, banking, asset management, and executive leadership. After graduating from Hitotsubashi University with a B.A. in Economics, he joined The Industrial Bank of Japan (IBJ) in 1986.

His career spans foreign exchange, derivatives, fixed income, product sales, treasury, corporate planning, and asset management across Tokyo, New York, Singapore, and London. He began his international career at IBJ’s New York Branch Treasury Dept. in 1991, after that,  working in Derivatives Products Dept. at Tokyo head office and serving as Head of the Sales and Trading Team at the Singapore Branch Treasury Dept.

Following banks merger to Mizuho Corporate Bank in 2002, he served as Head of Financial Institutions Sales in Derivatives & Fixed Income Department in Tokyo, and moved  as Deputy General Manager in the Americas Treasury Department in New York in 2006. In 2011 he joined  DIAM Co., Ltd., asset management company, serving as Head of the Corporate Planning Group in Tokyo, and in 2015 as Chief Executive Officer of DIAM International Ltd. in London. (Now Asset Management One International Ltd.)

In 2019, he returned to Tokyo as a Senior Manager in the Products Division at Asset Management One. From April 2026, he serves as a member of the Investment Committee for Kobe University. He also has been a guest speaker for finance at Kyoto University since 2021.

At EJCA, he supports foreign professionals and executives who need to communicate in Japanese financial and corporate environments. His advisory approach is grounded in real-world experience in markets, institutional sales, management discussions, risk-sensitive communication, and cross-border coordination. He helps clients express complex business topics with clarity, precision, and professionalism in Japanese corporate settings.

Kiwamu Ogawa is an EJCA Business Japanese Advisor with professional experience spanning publishing, advertising, inbound tourism, and Japanese language education.
He spent 16 years in Japan’s publishing and advertising industries, working in planning, editing, and sales. He later taught Japanese for approximately four years in Mexico and Colombia, supporting business executives, professionals, and university students from diverse cultural backgrounds.
He then worked for approximately two and a half years at HIS in Cancún, where he was involved in inbound travel planning, tour coordination, and interpreting. Through these roles, he developed extensive practical experience communicating with international clients and business partners.
At EJCA, he goes beyond grammatical accuracy and focuses on Japanese communication that builds trust in real professional settings. Drawing on his experience teaching executives and business professionals, as well as his cross-industry and international background, he provides practical guidance tailored to each client’s role, industry, and objectives, including workplace culture, communication styles, and business etiquette in Japan.
He has passed the Japanese Language Teaching Competency Test and can provide support in English and conversational Spanish.