After graduated from Chiba University, Faculty of Engineering, he joined Sony Corporation, assigned Design Center and U.S. Design Center, and designed Walkman, Radio, and TV, etc. 

In 1991, established sumikawadesign, the independent design office. His design of table tennis's court table used at 2016 Rio and 2020 Tokyo Olympic game was admired around the world and his designed playground equipment has won iF DESIGN AWARD 2017. His design has won Red Dot Design Award, GOOD DESIGN AWARD, and many other awards as well.

He has been practicing design beyond stereotypes by making full use of the experience of wondering 57 countries around the world as a backpacker. As Engineering-based designer, highly skills of geometry by taking full advantage of 3D CAD and Printer, excellent at curved surface design with ergonomic comfort.  From state-of-the-art equipment to traditional craft, he designs actively and continuously in a wide range of fields.

After graduating from the Faculty of Fine Arts at the Tokyo University of the Arts, she worked in  the advertising creative department at Parco before establishing Hitomi Sago Design Office in 1988.
Although grounded in graphic design, her works cover a wide spectrum ranging from spatial design to product design. Many of her projects involve the revitalization of local industries.
Major awards received include the Silver Award from the New York ADC, the JAGDA New Designer Award, the Japan Package Design Award Special Prize, and the Minister of International Trade and Industry Prize at the All Japan Calendar Competition. She also played the roll of judge of Good Design Award from 2003 to 2013, instructor of Fukui Design Academy, director of JAGDA. Visiting professor at Osaka College of Arts.

While involves working on TV drama, film, CM, and for various celebrities as a specialist of eyewear fitting, also working actively as a photographer in magazines & SNS media field.

In 2006, she became independent as a free-lance writer, after working for a publishing company. She covers exhibitions or manufacturers both within and outside Japan, and also has interviews with eyewear designers. She submits her writing for eyewear magazines and web media.

Born in Yokohama. After graduating from Tokyo Women's Christian University, joined Edwin. She has been in the sales position for four and a half years in the sales department. Joined INFAS Publications in 2000 after working as a reporter for Nippon Textile Newspaper. As a reporter, she was mainly in charge of interviewing designer brands. After working as the editor-in-chief of "Fashion News" and "WWD Japan", she has been in her current position since April 2021. She is a member of the selection committee for the "Daily Fashion Awards" and an advisory council for the "International Woolmark Prize 2020".