Kosuke Kato
Born in Tokyo • Early Childhood in Honancho
Born in Tokyo, Japan. Spent early childhood in Honancho, Suginami Ward until primary school.
Relocation to Higashi-Totsuka, Yokohama
Moved to Yokohama, Kanagawa Prefecture. Spent substantial formative years in Higashi-Totsuka. Active in competitive swimming, student council leadership, and cram school with tape-wrapped bags.
Keio Futsubu Junior High • Basketball & Hachioji
Entered Keio Futsubu Junior High School. Immersed in basketball (shooting guard). Favorite subjects were Japanese and history. Independent research in 9th grade focused on "Roman Absolute Monarchy". Spent one year of junior high living with grandparents in Hachioji, Tokyo.
Keio Academy of New York • Rugby & MoMA Pop Art
Entered Keio Academy of New York. Spent formative adolescence in suburban New York, diving passionately into rugby from sophomore year. Absorbed contemporary pop art such as Keith Haring at MoMA and cultivated a deep interest in sociology.
Keio SFC • Commencement of Digital Craft Practice
Entered Keio University Faculty of Policy Management (SFC). A chance meeting with a senior peer in front of the campus store led to joining a web design company, launching hands-on practice in digital production and planning during student years. Continued competitive rugby.
Founded Independent Studio "Experience Transporters"
Established independent freelance practice under the studio name "Experience Transporters" at age 25. Began extensive work across web design, digital architecture, and graphics.
In-House Development of Operations System "ET withwith"
Designed and developed proprietary business management platform "ET withwith". Began integrated lifecycle management of clients, contracts, and delivery milestones, powering collaborations with over 100 corporate clients.
Relocation of Studio to Hachioji • Founded "Kosuke Kato Planning & Design"
Relocated studio to the nature and historic landscape of Hachioji, Tokyo. Founded "Kosuke Kato Planning & Design", engaging deeply in strategic problem solving across regional revitalizations, corporations, and cultural institutions.
Hachioji OPA 6th Anniversary Visual Identity
Produced key visual and campaign illustrations for Hachioji OPA's 6th Anniversary, capturing city life and civic energy with vibrant artisanal lines.
20th Freelance Anniversary • Google Home Challenge • OPA 7th
Marked the 20th anniversary of independent studio practice. Participated in the Google Home APIs Developer Challenge 2025. Created 7th Anniversary visual for Hachioji OPA.
Transition to "Definer" • Project Kamos • First Book Publication
Redefined professional identity as "Definer". Launched "Project Kamos". Published inaugural monograph "Definer: 20 Years of Craft, Observation and Systems".
