Keiji Ashizawa founded Keiji Ashizawa Design in 2005, establishing a studio dedicated to craft and a motto of 'Honest Design'. He also serves as the representative of Ishinomaki Laboratory. His work spans architecture, interiors and furniture design, with notable collaborations with brands such as Karimoku Furniture, KOKUYO, and Audo Copenhagen. His architectural portfolio includes both domestic and international projects, most recently featuring TRUNK(HOTEL) YOYOGI PARK and seven Blue Bottle Coffee stores.