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Event Report: FFS Theory Workshop at HR Library

On July 26, 2025, Trustyyle Co., Ltd. hosted a compelling workshop titled “Discovering the Power of Individuality: An Experience with FFS Theory” at the HR Library in Chuo, Tokyo. The event was a resounding success, with over 90% of participants reporting satisfaction. The workshop featured esteemed speakers including Keietsu Sakai and Hozumi Hattori from Relate Co., Ltd., who shared insights on the FFS (Five Factors and Stress) Theory while engaging attendees in practical, experience-based activities.

Background and Purpose

In today’s fast-paced business landscape, the sustainable growth of organizations hinges on how effectively they can harness diverse personal traits. However, many companies struggle with management practices that align with member characteristics or find themselves trapped in intuitive team-building methods.

The FFS Theory approaches the concept of individual strengths scientifically, bridging the gap between knowledge and practical application. This workshop was designed not just to educate participants on the theory but to allow them to experience it firsthand using their diagnostic results. The goal was to enhance self-understanding, encourage appreciation of differences in others, and provide concrete tips for management and team-building initiatives.

Event Overview

Workshop Title

Discovering the Power of Individuality: FFS Theory Experience in HR Library

Date and Time

July 26, 2025, from 14:00 to 17:00

Venue

HR Library, 6F WACROSS NINGYOCHO, 1-12-7 Kakigaracho, Chuo, Tokyo

Theme

Understanding Individuality Based on FFS Theory and its Practical Applications for Organizations and Teams

Speakers

• - Keietsu Sakai: A Kobe University graduate, Keietsu Sakai has extensive experience in strategic consulting across various industries, including telecommunications, airlines, and real estate. In 2023, he founded Relate Co., Ltd.
• - Hozumi Hattori: After graduating from Waseda University, Hozumi began his career in HR at Recruit HR Marketing. He played key roles at Greedy Inc. and Money Forward, significantly contributing to organizational growth. In 2024, he joined Relate Co., Ltd., overseeing various business aspects.

Participant Feedback

The workshop received overwhelmingly positive feedback, with over 90% of participants expressing satisfaction in a post-event survey. Here are some highlighted comments:

• - “I found it fascinating to verbalize the factors influencing my behavior. It felt almost like astrology!”
• - “The workshop clearly showcased individuality. I realized that while similar traits foster smooth collaboration, they can lead to oversight of other important factors.”
• - “Viewing individuality not just from a personal standpoint but through relationships and team composition was enlightening.”
• - “I strongly resonated with the idea that interpersonal relationships affect productivity, which directly correlates with recent company challenges.”
• - “I learned the significance of having a diverse team, understanding the initial time investment needed for effective teaming.”

Key Outcomes and Future Outlook

This event offered invaluable insights into self-understanding, interpersonal comprehension, and discovering the potential of teams through the lens of FFS Theory. By actively participating and applying the theory’s principles, attendees gained tangible action plans to implement within their organizations. The primary achievement lies in equipping participants with tools they can readily apply.

At HR Library, our tagline is “Open the Future through Learning with Your Peers.” We remain committed to providing enriching experiences for HR professionals and all interested parties. Upcoming events will be announced via our official website and social media, so stay tuned!

About HR Library

Opened on April 1, 2024, HR Library is a coworking space and community hub for HR professionals. With over 2,500 books related to HR and more than 700 members, we aim to facilitate valuable learning and networking opportunities.

Location: 6F WACROSS NINGYOCHO, 1-12-7 Kakigaracho, Chuo, Tokyo
Founded: April 1, 2024
Official Website: HR Library
Official X: HR Library X
LinkedIn: HR Library LinkedIn