"Customer-Originated Management Transformation" We support clients to create new customers and new value
with “Customer-Originated Management Transformation”

We support and invest to unleash the full potential of products and services that enrich the world.


Customers' mind and behavior changes every minute for any business.

Today’s customer is already different from who he/she was yesterday and will be different tomorrow. This indisputable fact attracts little attention for business decisions.

Changes of customers keep invalidating any great strategies and plans.

Sustainable business growth can never be achieved without a deep understanding of customers and their changes. Lack of common understanding always leads to sectionalism and inefficiency of organizational work.Understanding changing customers is the pivot for any business and organization.

Strategy Partners supports clients to internalize customer understanding practice and capability for Customer-Originated Management Transformation.


(Only in Japanese)



代表 西口一希

Kazuki Nishiguchi

  • 1990 – 2006
    Procter & Gamble – Brand Manager, Marketing Director
  • 2006 – 2015

    Rohto Pharmaceutical Company – Corporate Executive Officer, CMO (Chief Marketing Officer)
  • 2015 – 2018
    L’Occitane Japon – Président Representative Director, Outside Director

    Melvita Japon – Président Representative Director

  • 2017 – 2020
    SmartNews – Corporate  Executive Officer, CMO for Japan and USA, Marketing Strategy Advisor
  • 2017 – Current

    Strategy Partners – President

    M-Force – Co-Founder, Director (https://mforce.jp/)

    Growth X – Outside Director