[Shiragata Research Institute x Keiei Sanbo] Shiragata Welcomes the Beloved Executive Community 'Sanbo' into Its Group for Joint Operation. Maintaining President Shintani's 'Ultimate Haven' While Creating New Synergy
Shiragata Research Institute has acquired the executive community business 'Sanbo' from Keiei Sanbo Co., Ltd. Operating jointly, they will maintain the community's unique atmosphere while providing expert backup for implementation.
📋 Article Processing Timeline
- 📰 Published: April 2, 2026 at 22:00
- 🔍 Collected: April 2, 2026 at 13:34
- 🤖 AI Analyzed: April 21, 2026 at 06:24 (448h 50m after Collected)
Shiragata Research Institute Co., Ltd. (Headquarters: Chuo-ku, Tokyo; President: Tetsuya Ishikawa), whose purpose is to 'Energize presidents of small, medium, and venture companies!', has acquired the 'Community Business (Sanbo)' from Keiei Sanbo Co., Ltd. (Headquarters: Shinjuku-ku, Tokyo; President: Kenji Shintani) and welcomed the business into the Shiragata Research Institute Group.
## Initial Report: Moving to a Joint Operation Structure by Both Companies
This initiative is not an acquisition of the 'company' Keiei Sanbo Co., Ltd. Shiragata Research Institute strongly fell in love with the wonderful 'Community Business' operated by Keiei Sanbo, transitioning it to a joint operation structure to improve the business together.
## Why did Ishikawa of Shiragata Research Institute fall in love with the 'Sanbo' business?
We especially want Shiragata Research Institute's valued clients to know that President Ishikawa fell in love with the worldview created by the executive community 'Sanbo' and its organizer, Kenji Shintani.
What is the most terrifying thing for a president? It is 'hitting a dead end by thinking about management based only on one's own common sense, knowledge, and the world one can see'. In other words, the ultimate management risk is 'not knowing'. The study sessions at 'Sanbo' can dispel this risk.
President Shintani has no preconceptions that 'this is absolutely right'. Without being bound by his own values, he treats topics flatly—even those making entirely opposite claims—and provides exactly the learning that executives truly need every week. This flexible stance of 'not clinging to a single correct answer' deeply resonates with the stance we value at Shiragata Research Institute.
By placing themselves in this environment, presidents can realize 'what they don't know' and reexamine their own management from multifaceted perspectives they hadn't even imagined. 'I want to deliver this incredibly open and stimulating environment to more presidents.' This is the biggest reason why Ishikawa of Shiragata Research Institute fell in love with the 'Sanbo' business.
## An Absolute Promise to 'Sanbo' Members
With this group integration, there is absolutely no need to worry that 'since the company was acquired, stiff consulting firm people will come in and make it uncomfortable...'. Please recognize this as a powerful supporter joining President Shintani's business.
Shiragata Research Institute sincerely respects the unique worldview of 'Sanbo' that only President Shintani can create. That is why we declare that 'we will absolutely not do anything to destroy the current worldview of Sanbo'. President Shintani will continue to serve as the top planner and operator of the community, and the popular study sessions and open networking events will continue with the same passion as before.
## 'New Synergy' Born from Mutual Understanding, Gently Standing By Your Side
The main protagonist under the new structure remains strictly the 'Sanbo' community created by President Shintani. Shiragata Research Institute will not 'force practical implementation' there, but rather act behind the scenes as a 'reassuring backup you can rely on when needed'.
When gaining wonderful insights at a study session and thinking, 'I want to try this in my own company', it is not uncommon for a president to try doing everything themselves and end up doing it halfway. At times like that, rather than forcibly selling consulting, a professional who you can easily bounce ideas off of (Shiragata Research Institute) is right nearby
## Initial Report: Moving to a Joint Operation Structure by Both Companies
This initiative is not an acquisition of the 'company' Keiei Sanbo Co., Ltd. Shiragata Research Institute strongly fell in love with the wonderful 'Community Business' operated by Keiei Sanbo, transitioning it to a joint operation structure to improve the business together.
## Why did Ishikawa of Shiragata Research Institute fall in love with the 'Sanbo' business?
We especially want Shiragata Research Institute's valued clients to know that President Ishikawa fell in love with the worldview created by the executive community 'Sanbo' and its organizer, Kenji Shintani.
What is the most terrifying thing for a president? It is 'hitting a dead end by thinking about management based only on one's own common sense, knowledge, and the world one can see'. In other words, the ultimate management risk is 'not knowing'. The study sessions at 'Sanbo' can dispel this risk.
President Shintani has no preconceptions that 'this is absolutely right'. Without being bound by his own values, he treats topics flatly—even those making entirely opposite claims—and provides exactly the learning that executives truly need every week. This flexible stance of 'not clinging to a single correct answer' deeply resonates with the stance we value at Shiragata Research Institute.
By placing themselves in this environment, presidents can realize 'what they don't know' and reexamine their own management from multifaceted perspectives they hadn't even imagined. 'I want to deliver this incredibly open and stimulating environment to more presidents.' This is the biggest reason why Ishikawa of Shiragata Research Institute fell in love with the 'Sanbo' business.
## An Absolute Promise to 'Sanbo' Members
With this group integration, there is absolutely no need to worry that 'since the company was acquired, stiff consulting firm people will come in and make it uncomfortable...'. Please recognize this as a powerful supporter joining President Shintani's business.
Shiragata Research Institute sincerely respects the unique worldview of 'Sanbo' that only President Shintani can create. That is why we declare that 'we will absolutely not do anything to destroy the current worldview of Sanbo'. President Shintani will continue to serve as the top planner and operator of the community, and the popular study sessions and open networking events will continue with the same passion as before.
## 'New Synergy' Born from Mutual Understanding, Gently Standing By Your Side
The main protagonist under the new structure remains strictly the 'Sanbo' community created by President Shintani. Shiragata Research Institute will not 'force practical implementation' there, but rather act behind the scenes as a 'reassuring backup you can rely on when needed'.
When gaining wonderful insights at a study session and thinking, 'I want to try this in my own company', it is not uncommon for a president to try doing everything themselves and end up doing it halfway. At times like that, rather than forcibly selling consulting, a professional who you can easily bounce ideas off of (Shiragata Research Institute) is right nearby