“Mikiwame AI” Adopted for Organizational Development Across NTT East Japan Group’s 30,000 Employees

LeadingMark Co., Ltd. (Headquarters: Minato-ku, Tokyo; President and CEO: Yusuke Iida; hereinafter “LeadingMark”) announces that its “Mikiwame AI” will be fully implemented across approximately 30,000 employees of the NTT East Japan Group starting July 13, 2026.

This initiative combines the specialized expertise in human capital management and organizational development cultivated by NTT HumanEX Co., Ltd. (hereinafter “NTT HumanEX”) with “Mikiwame AI” to deliver integrated, hands-on consulting support from data analysis through to implementation and stabilization.

1. Background and Expectations from NTT East Japan

“Mikiwame AI” has been highly evaluated for its scientific visualization of each employee’s personality traits and mental condition, enabling personalized AI-driven support that translates into actionable strategies. Additionally, NTT HumanEX consultants will consistently accompany the process—from analyzing results to planning, executing, and evaluating improvement initiatives. Based on these strengths, it has been decided to introduce all functions of “Mikiwame AI”—including the “Mikiwame AI Aptitude Test,” “Mikiwame AI Well-being Survey,” and “Mikiwame AI Management”—across all approximately 30,000 employees.

2. Future Outlook

Going forward, LeadingMark will systematize insights gained through practical application within the NTT East Japan Group, aiming to establish a model for human capital management in large-scale organizations using “Mikiwame AI.”

Through accumulated data on employee personality and mental condition, records of managers’ 1-on-1 practices, and insights from implemented initiatives and their effectiveness evaluations, the company will continue to build and systematize know-how that enhances employee engagement and organizational performance.

Furthermore, practical knowledge and best practices gained through this initiative will be disseminated via NTT HumanEX to other NTT Group companies and a wide range of organizations striving to advance human capital management.

3. Comments from Participating Companies

NTT East Japan Corporation Executive Officer, General Manager of Administration and Human Resources, CHRO Mr. Tomonao Ibara

NTT East Japan aims to create an organization where each employee can autonomously shape their career and maximize their potential. In a large organization of about 30,000 people, there are limits to how much we can support each individual through standardized HR systems or managerial experience alone. This initiative is an effort to integrate personality and mental state data collected through “Mikiwame AI” with each employee’s annual goals, leveraging AI support while ultimately ensuring that management engages with employees with human warmth. We will build a system where both employees and the organization grow together, enhancing each individual’s sense of purpose and enabling them to fully utilize their strengths.

NTT HumanEX Co., Ltd. President and CEO Mr. Taigo Ichikawa

To date, we have supported our clients’ organizational transformations through talent data-driven consulting and HR system design, grounded in the human capital management expertise cultivated by the NTT Group over many years. By integrating “Mikiwame AI” with our own expertise in human capital management, we can now provide more effective organizational development support tailored to each employee’s characteristics and condition. Leveraging the practical knowledge gained through organizational transformation within the NTT East Japan Group of approximately 30,000 employees, we will disseminate these insights to become a partner that supports clients from data-based problem identification through behavioral change to organizational transformation, contributing to enhanced engagement and sustainable growth.

LeadingMark Co., Ltd. President and CEO Yusuke Iida

“Mikiwame AI” has supported around 6,000 companies and 2 million employees by visualizing each employee’s personality and mental state and providing personalized AI-driven advice to enhance organizational productivity and employee well-being. However, truly transforming an organization requires indispensable expertise in organizational development—interpreting data, designing initiatives, and continuously accompanying their execution. The full adoption of “Mikiwame AI” across a 30,000-employee organization like the NTT East Japan Group feels like a significant step toward spreading a new model of human capital management across Japan. We will fully support this transformation together with NTT HumanEX.

4. Related Press Releases

Press releases from NTT HumanEX and NTT East Japan regarding this announcement can be found below:

NTT East Japan Corporation

https://www.ntt-east.co.jp/release/detail/20260714_01.html

NTT HumanEX Co., Ltd.

https://www.ntthumanex.co.jp/newsrelease/260714/

LeadingMark Co., Ltd.

https://www.leadingmark.jp/mikiwame-ai-ntt-east/

＜About the Operating Company＞

Contact for this announcement

Public Relations Contact LeadingMark Co., Ltd. Email: [email protected]

Company Name: LeadingMark Co., Ltd.

Representative: President and CEO Yusuke Iida

Established: January 2008

Address: Toranomon 33 Mori Building, 10th Floor, 3-8-21 Toranomon, Minato-ku, Tokyo 105-0001

Corporate Website: https://www.leadingmark.jp/

Recruitment Site: https://recruit.leadingmark.jp/

Business: HR services through “Personality Tech”

- “Mikiwame AI Aptitude Test”: Prevents mismatched hiring by identifying employees who will thrive in-house within 10 minutes

- “Mikiwame AI Well-being Survey”: Visualizes employees’ mental states and provides advice based on personality to achieve well-being

- “Mikiwame AI Management”: Maximizes employee performance starting from 1-on-1 meetings

- “Mikiwame AI AI Coach”: Achieves organizational transformation through AI, consulting, and training

- “Mikiwame AI Corporate Training”: Training that connects theory and practice, driving organizational change

- “Mikiwame Shukatsu”: Japan’s largest career support service for high-achieving students

- “NEXVEL”: Membership-based job-hunting support program

- “Mikiwame Lab”: Blog providing information on aptitude tests, HR, recruitment, and more