Updated on 2026/10/20

写真a

 
MITOMI Keita
 
Title
Associate Professor
Contact information
メールアドレス
Laboratory Phone number
+81-23-628-4797
　
Homepage URL
https://co-prototyping-lab.jp/
Profile
Keita Mitomi studies how prototypes are interpreted and how their design can support this process, with a particular focus on their unfinished nature. He is the author of Learning from Failure: A Guide to Prototyping for Successful New Business Development (Shoeisha, 2022, in Japanese). His publications include "Understanding How Prototypes Are Interpreted: A Structural Model of Final Product Interpretation" (The Design Journal, 2025).

Research Areas

  • Informatics / Human interface and interaction

  • Humanities & Social Sciences / Design

Graduate School

  • Keio University, Graduate School of System Design and Management

    Master's Course, 2020.03, Completed

  • Keio University, Graduate School of System Design and Management

    Doctor's Course, 2026.09, Completed

Degree

  • Doctor of System Design and Management, Keio University, 2026.09

  • Master of System Engineering, Keio University, 2020.03

External Career

  • Keio Gijuku educational corporation, Researcher, 2021.04 - 2025.03

  • Seikei Gakuen, Part-time Lecturer, 2025.04 - 2025.09

Academic Society Affiliations

  • Japan Creativity Society

  • Japanese Society for the Science of Design

  • Design Research Society

  • The American Society of Mechanical Engineers

  • The Japan Society of Mechanical Engineers

  • Human Interface Society, SIG-UXSD Committee Member

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Papers

  • Understanding how prototypes are interpreted: A structural model of final product interpretation , The Design Journal , 28(6) 1219-1240, 2025.10

    Keita Mitomi, Seiko Shirasaka

    Multiple Authorship (Only Japanese)

  • AI-Supported Reflection and Articulation for Peer Dialogue: Toward Linking Personal Preparation and Cooperation, Proceedings of the 2026 Companion of the Computer-Supported Cooperative Work and Social Computing, 183-188, 2026.10

    Koki Kusano, Keita Mitomi, Norimasa Kobori

    Multiple Authorship (Only Japanese)

  • A Method for Enhancing Willingness to Participate in Co-Creation through Memory-Evoking Prototype Interpretation: Proposal and Validation Using a Disaster-Prevention App, Doctoral Dissertation, Graduate School of System Design and Management, Keio University, 2026.09

    Keita Mitomi

    Single Author

  • The Role of Corporate Makerspaces as a Community of Practice Focusing on Employee Mindset, Ricoh Technical Report, 48 164-172, 2026.03

    Masashi HOMMI, Keiji OGATA, Hideki IBI, Kosuke ADACHI, Keita MITOMI

    Multiple Authorship (Only Japanese)

  • Memories Evoked by Prototypes: A Memory‑Leveraged Method to Increase Willingness to Co‑Create, SIBR 2026 Proceedings, 2026.01

    Keita Mitomi, Seiko Shirasaka

    Multiple Authorship (Only Japanese)

  • Memories Evoked by Prototypes: Proposal and Evaluation of a Priming-Based Method to Foster Co-Creation, Journal of Japan Creativity Society, 29 82-102, 2025.12

    Keita Mitomi, Seiko Shirasaka

    Multiple Authorship (Only Japanese)

  • Memories Evoked by Prototypes: Proposal of a Priming-Based Method to Foster Co-Creation , IASDR 2025: Design Next, 2025.12

    Keita Mitomi, Seiko Shirasaka

    Multiple Authorship (Only Japanese)

  • Mitigating Barriers in Novice Designers' Prototyping with AI: A Comprehensive Approach , ServDes 2025, 2025.10

    Keita Mitomi, Koki Kusano

    Multiple Authorship (Only Japanese)

  • ANALYSIS OF PROTOTYPE FIDELITY AND ITEMS RELATED TO CUSTOMER WILLINGNESS TO ENGAGE IN CO-DESIGN IN NEW PRODUCT DEVELOPMENT, Journal of the Science of Design , 8(2) 47-56, 2024.11

    Keita MITOMI, Toshiharu MITSUHASHI, Masashi HOMMI, Koki KUSANO, Seiko SHIRASAKA

    Multiple Authorship (Only Japanese)

  • Factors Hindering the Implementation of Prototyping in the Early Stages of New Business Development , ASME IDETC–DTM Conference 35, 2023.08

    Keita Mitomi, Masashi Honmmi, Masao Yasugi, Satoshi Tanaka, Nobuyuki Ohnaga, Seiko Shirasaka

    Multiple Authorship (Only Japanese)

  • Prototyping in Each Development Process to Improve Company and Team Performance, [ ] With Design: Reinventing Design Modes, 2297-2313, 2022.11

    Keita Mitomi, Mayu Akaki, Nobuyuki Kobayashi

    Multiple Authorship (Only Japanese)

  • A Proposal for a Prototyping Method Focused on Communication That Increases Economies of Prototyping , ASME IDETC–DTM Conference 34, 2022.11

    Keita Mitomi, Tomoko Ikenoue, Keita Takizawa, Toshiharu Mitsuhashi

    Multiple Authorship (Only Japanese)

  • PROTOTYPING CLASSIFICATION FOR NOVICE DESIGNERS PARTICIPATING IN DESIGN PROJECT , Journal of the Science of Design, 5(2) 2_91-2_100, 2021.12

    Keita MITOMI, Mayu AKAKI, Nobuyuki KOBAYASHI, Kenichi TAKANO

    Multiple Authorship (Only Japanese)

  • Effects of Prototyping on the Solution Development Process: Through the actual application to 24 prototyping of "Your Pleasure", Journal of Japan Creativity Society, 24 59-78, 2021.03

    Keita Mitomi, Nobuyuki Kobayashi, Mayu Akaki, Kenichi Takano

    Multiple Authorship (Only Japanese)

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Books

  • Design and Design Studies (Design Studies Series, Vol. 1), Sangensha Publishers Inc., 2026.06

    Keita Mitomi

  • Learning from Failures: A Textbook of Prototyping for Successful New Business Development, Shoeisha, 2022.09

    Keita Mitomi

Review Papers

  • 生成AI時代の“つくりながら巻き込む”プロトタイピング, 翔泳社, ProductZine, 2025.08

    三冨敬太

  • The Front Line of Employee Education: Testimony from Key People, PRESIDENT, 2023.02

    Keita Mitomi

  • New Trends in the Democratization of Prototyping, Shoeisha, Biz/Zine, 2021.08

    Keita Mitomi

  • Designing through Prototyping, Sendenkaigi, BRAIN, 2021.04

    Keita Mitomi

Work

  • Red Dot Award: Design Concept 2026, memor, Design Zentrum Nordrhein Westfalen, 2026.06

    Software

  • Red Dot Award: Design Concept 2025, Best of the Best, Sound Memory, 2025.06

    Software

  • NY Product Design Awards - Silver, User Experience (UX) - Product UX, Sound Memory, 2025.05

    Software

  • GOOD DESIGN AWARD, mimamori receipt, 2020.09

    Other

  • GOOD DESIGN AWARD, otototone, 2017.09

    Software

  • ANA WonderFLY CREATIVE AWARD, mimamori receipt, 2017.08

    Other

  • Kids Design Award, otototone, 2017.07

    Software

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Academic Awards Received

  • Paper Award, Journal of Japan Creativity Society, Vol. 29, 2026.09.07, Japan, Keita Mitomi, Seiko Shirasaka

  • Excellence Award, 5th Yamagata University Interdisciplinary Research Conference, 2026.09.02, Japan, Keita Mitomi, Takumi Yamazaki

  • Outstanding Paper Award, Proposal of a Support Method for Clarifying How to Conduct Prototyping: A Case Study of Smartphone Applications at the Idea Stage, 2020.03, Japan, Keita Mitomi

Other external funds procured

  • Mobility for ALL 2025 Activity Support Funding，2025.02，Mobility for ALL 2025 Activity Support Funding

    Toyota Mobility Foundation

  • Mobility for ALL 2024 Activity Support Funding，2024.07，Mobility for ALL 2024 Activity Support Funding

    Toyota Mobility Foundation

  • ANA WonderFLY CREATIVE AWARD Prize Money，2017.10，ANA WonderFLY CREATIVE AWARD Prize Money

    ALL NIPPON AIRWAYS CO., LTD.

Past consigned research fund received

  • Academic Guidance on Prototyping Strategies for New Business Creation under Uncertainty, 2025.10 - 2027.03, Other

  • Academic Guidance on Prototyping and Entrepreneurship for Digital Education in Local Communities, 2025.10 - 2026.09, Other

  • Research on Prototyping Skills and Mindsets for Engaging Stakeholders and Creating Value, 2025.10 - 2026.03, General Consignment Study

Joint Research activities

  • A Study of the Process of Embedding Citizen Development in Organizations during Digital Transformation of Regional Small and Medium-Sized Enterprises, 2026.09 - 2028.07, Collaboration in Japan

  • A Study of Workshop Methods for Social System Design for Spaceports, 2026.04 - 2027.03, Collaboration in Japan

  • Co-Creative Prototyping in Practice: Practice and Methodological Development of Co-Creative Prototyping for New Business Creation, 2026.02 - 2027.03, Collaboration in Japan

  • Playful Active Design Research: Exploring Value Creation by Local Residents with AI Facilitators Using Community Resources (People, Things, and Activities), with Mercari as One Example, 2025.10 - 2026.03, Collaboration in Japan

Presentations

  • 73rd Spring Research Conference of the Japanese Society for the Science of Design, Domestic presentation, 2026.06, Democratizing Co-Creation through Generative AI: Enabling Residents to Design Solutions to Local Challenges—Insights from an Industry–Academia Co-Creation Project, Symposium, workshop panel (public)

  • 47th Annual Conference of Japan Creativity Society, Domestic presentation, 2025.11, Proposal and Validation of a Method for Designing Information Presented in Prototypes Using Evaluators' Memories: A Case Study of an App Suggesting Disaster-Prevention Actions, Oral presentation (general)

  • 72nd Spring Research Conference of the Japanese Society for the Science of Design, Domestic presentation, 2025.06, A Comprehensive AI Approach to Mitigating Barriers in Prototyping for Non-Experts, Poster presentation

  • 72nd Spring Research Conference of the Japanese Society for the Science of Design, Domestic presentation, 2025.06, Presenting a Structural Model of Prototype Interpretation Using the Think-Aloud Method, Oral presentation (general)

  • The 71st Annual Conference of JSSD, Domestic presentation, 2024.06, Organized Session: Democratization and Uses of Prototyping as Technology Advances, Symposium, workshop panel (public)

  • Japan Marketing Academy Conference 2023, Domestic presentation, 2023.10, Measuring the evaluation of customer feedback in new product prototyping. - Using the GNAT-., Oral presentation (general)

  • The 70th Annual Conference of JSSD, Domestic presentation, 2023.06, RELATIONSHIP BETWEEN PROTOTYPING AND TEAM CREATIVITY AT THE EARLY STAGE OF NEW PRODUCT DEVELOPMENT, Oral presentation (general)

  • The 201st Research Meeting of the Human Interface Society, Domestic presentation, 2023.06, The Effect of In-Company Makerspace on Employee Mindset, Oral presentation (general)

  • The 201st Research Meeting of the Human Interface Society, Domestic presentation, 2023.06, Proposal of a business creation method based on new technology focusing on individual intrinsic thoughts., Oral presentation (general)

  • 44th Annual Conference of Japan Creativity Society, Domestic presentation, 2022.11, Analysis of Prototyping Design for Online and Offline Environments, Oral presentation (general)

  • The 68th Annual Conference of JSSD, Domestic presentation, 2021.06, A Proposal for an Interactive Design Process that Transcends Disability・From Inclusive Design to Valuable Design that Discovers and Reveals Value, Oral presentation (general)

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Preferred joint research theme

  • Prototyping with Generative AI for People without Design or Engineering Expertise, No Setting

  • Methods for Addressing Local Challenges, No Setting

 

Academic Activity

  • Human Interface Society, SIG-UXSD Committee Member, 2022.12 -

  • Human Interface Society, Editorial Committee Member for the Special Issue: Universal Design II, 2026.03 -

Social Activities

  • Business Concept Innovation Program: Turning Ideas into Businesses, from Concept to Implementation，2026.11 - 2026.12

  • Prototyping Workshop: Give Ideas Form, Test Them, and Refine Them，2026.10

  • How to Create Prototypes That Engage Others: Designing Prototypes That People Want to Help Develop in the AI Era，2026.09

  • Researchers and Practitioners Discuss In-House Development in the AI Era: Dialogue and Speed Created by the Space Left for Incompleteness，2026.09

    https://www.sbbit.jp/eventinfo/90106

    AI now enables anyone to build applications quickly. However, building quickly does not necessarily mean building the right thing. This seminar is a dialogue between a university professor researching prototyping and an engineer practicing in-house application development. Their shared keyword is incompleteness. By showing end users prototypes that deliberately leave room for development before they are perfected, dialogue emerges and the real issues become clearer. The discussion explores the potential of this approach from both theoretical and practical perspectives.

  • Embedding Tangible Leadership in Organizations: A Tangible Leadership Session，2026.07

  • Outreach Lecture at Yamagata Prefectural Yamagata Chuo High School: Period for Inquiry-Based Cross-Disciplinary Study，2026.05

  • Yamagata Co-Creation Academy: Program for Developing Key Personnel for Regional Industry，2026.04 - 2026.10

    Responsible for sessions 1, 8, and 14.

  • Designing Issues That Matter to Us: Two Months of Designing Flea Markets in the AI Era with Mercari，2026.01 - 2026.02

  • Matsumoto AI Camp: Three Days for High School Students to Identify Challenges and Give Their Ideas Form，2026.01

  • An Introduction to Website and App Creation with No-Code Tools for Everyone: Co-Creation Prototyping Lab Lecture Series, Session 1，2025.12

  • 86th Yamagata Ohha Club: Introducing Practice-Based Education and Research at the Co-Creation Prototyping Lab in Yamagata University's School of Collaborative Regional Innovation and Data Science，2025.12

  • Lecture for the Marketing Community and Human Research Group at GLOBIS University，2025.04

  • Keys to New Business Success in the VUCA Era: Practicing Design Thinking through Prototyping，2024.12

  • Hamamatsu Startup Support Program: An Overview of Prototyping，2024.10

  • Shibaura Business Model Competition: An Overview of Prototyping，2024.10

  • Mitsubishi Marketing Research Group and CC Research Group: Prototyping Workshop，2024.06 - 2024.09

  • NAGANO 01 TALKS: What Is Prototyping?，2024.05

  • TOSHIBA Business Creation Festival 2024: Approaches to Prototyping，2024.03

  • Practical Prototyping Workshop at TOKYO STARTUP GATEWAY，2023.11

  • Lecture on Prototyping at i.school innotalk，2023.05

  • Workshop for the Policy Planning Division of Asaka City, Saitama Prefecture，2019.10

  • Workshop for the Future Initiatives Creation Division of Maebashi City, Gunma Prefecture，2018.11

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Media Coverage

  • High School Students Learn AI-Based Data Analysis at a Workshop at Yamagata University，2026.08

    Planning and implementation of the one-day workshop covered in the report

  • Yamagata University Students Present Ideas for Addressing Challenges Faced by Older Residents，2026.07

  • Helping Older Adults Feel Secure in a Digital World: Eight Teams of Yamagata University Students Present Findings from a Project Exploring Solutions，2026.07

  • A Course in Which Students Address Local Challenges: Yamagata University's School of Collaborative Regional Innovation and Data Science，2026.07

  • Addressing Internet-Related Challenges for Older Adults: Yamagata University Interviews Residents about Their Internet Use，2026.07

  • A Workshop on Social System Design for Spaceports，2026.07

  • Inquiry across the Humanities and Sciences for High School Students: An August Workshop at Yamagata University's School of Collaborative Regional Innovation and Data Science，2026.06

  • YAMAGATA CAMPUS TOURS: Sharing University Students' Voices, Featuring Yamagata University's School of Collaborative Regional Innovation and Data Science，2026.06

  • A Course in Which Students Address Local Challenges: Yamagata University's School of Collaborative Regional Innovation and Data Science，2026.06

  • How to Deliver Everyday Information to Older Adults: Yamagata University Students and the Yamagata City Council of Social Welfare Explore Solutions，2026.06

  • Tangible Leadership Is Key to New Business Success: A Joint Survey by bridge and Yamagata University，2026.05

  • The Ability to Give Ideas Form Breaks New Business Stagnation and Is Found to Relate More Directly to Outcomes than Psychological Safety，2026.05

  • Incompleteness Moves People: A Prototyping Explorer Takes on Co-Creation in Yamagata，2026.04

  • High School Students Deepen Their Exploration of Local Challenges with Adults: Yamagata University Holds a Co-Creation Forum in March，2026.02

  • Anyone Can Give Their Thoughts Form by Making Things: A Report on the Prototyping Workshop，2025.08

  • Keio Student Newspaper: Prototyping and Creative Practice，2024.09

  • What Is Prototyping? Part 2，2024.06

  • What Is Prototyping? Part 1，2024.05

  • Panasonic's Unprecedented Project: Prototyping Is the Key，2024.03

  • Why Kobayashi Pharmaceutical Focuses on Prototyping: Making Know-How for New Business and Product Development Explicit，2024.01

  • Asahi Shimbun's bouncy, a Video Medium Exploring the Future: Imagination Expands through Sound, an App Inspired by How People with Visual Impairments Manage Information，2021.04

  • Japan FM Network: OH! HAPPY MORNING，2018.09

  • Yomiuri Shimbun: Disaster Preparedness Information for Onagawa on the Back of Receipts，2018.09

  • Sankei Shimbun: Renewed Efforts on Disaster Prevention Day, a Commercial Facility in Onagawa Shares Information and the Town's Attractions on the Back of Receipts，2018.09

  • Kahoku Shimpo: Disaster Preparedness Tips on Receipts，2018.09

  • Miyagi Television: OH! Bandes，2018.09

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Academic Activities

  • Peer review for The Design Journal，2026.07

  • Reviewer for Journal of Human Interface Society，2026.03 - 2026.05

  • Shinshu Digital and Value Creation Recurrent Learning Program: Design Thinking，2024.05

  • Tokyo University of Science Open Campus Course: An Introduction to Trying Out Ideas with AI for People Who Struggle with Making Things, Practical Prototyping for Everyone to Give Ideas Form，2024.01

  • Peer Review of Conference Papers for IASDR，2023.04