Immediate 10,000 Copy Reprint! Shu Yamaguchi's New Book 'Context Leadership: Context Defines the "Best" and "Worst" Bosses'
Kobunsha published Shu Yamaguchi's 'Context Leadership,' which received an immediate 10,000-copy reprint within a week of its release. The book challenges traditional leadership theories by focusing on 'context' rather than just 'actions.'
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- 📰 Published: April 28, 2026 at 01:00
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Kobunsha Co., Ltd. published Shu Yamaguchi's latest book, 'Context Leadership: Context Defines the "Best" and "Worst" Bosses' on Wednesday, April 15. Known for bestsellers such as 'Why World Elites Train Their Aesthetic Sense' (Kobunsha) and 'Management Strategy for Life' (Diamond), Shu Yamaguchi, who also attracted significant attention for his co-authored work 'Liberal Arts Become Weapons,' has released this definitive volume on leadership theory after 20 years of reflection.
The book drew immense interest even before its release, leading to a massive 10,000-copy reprint within just one week. It has claimed the #1 spot in multiple categories on Amazon, including 'Leadership,' 'Business Administration,' and 'Corporate Management.'
'Context Leadership: Context Defines the "Best" and "Worst" Bosses' (Kobunsha)
◆ Overview
What is the difference between a 'best boss' and a 'worst boss'? Actually, they often do the same things. Depending on the context, one can be a reliable leader who entrusts work to others or a terrible one who irresponsibly dumps tasks. So, where does the difference lie? What skills should one hone to become the best leader?
Existing leadership books have mostly focused on 'behavior'—what great leaders do. Typical examples in recent years include 'Great leaders show vision,' 'Great leaders delegate,' or 'Great leaders listen to subordinates.' This book aims to dispel the 'dangerous misunderstandings' prevalent in leadership discourse and provide a new perspective called 'Context.'
This is a must-read for all business professionals—not just struggling leaders and leadership candidates, but also the younger generation facing communication challenges with their supervisors.
◆ Comment from Shu Yamaguchi
'My new book, "Context Leadership," released on April 15, has gone into reprint within one week of its release.
It is meaningless to consider a leader's qualities or abilities in isolation from the context. Excellent leadership emerges through interaction with context, which is why leaders who achieve results focus on deciphering and editing the relationship between themselves and the context.
My gratitude to everyone who supports me!'
◆ Author Profile
Shu Yamaguchi
Born in Tokyo in 1970. Independent researcher, author, and public speaker. Representative of Leibniz. Graduated from Keio University (Philosophy) and completed a master's program in Art History. He has worked at Dentsu and Boston Consulting Group, engaging in strategy formulation, cultural policy, and organizational development. He received the Business Book Award 2018 Runner-up and HR Award 2018 Excellence Award for 'Why World Elites Train Their Aesthetic Sense.' Other books include 'How to Create the Most Innovative Organizations,' 'Intellectual Productivity of Foreign Consultants,' 'Prescription for a Deteriorating Old Men Society,' 'The Art and Science of Career Choice' (Kobunsha Shinsho), 'The Age of Newtypes,' 'Management Strategy for Life' (Diamond), 'The Future of Business' (President), 'Philosophy as a Weapon' (Kadokawa Bunko), and 'Self-Learning Techniques' (Nikkei Business Humanities Library).
◆ Bibliographic Information
Title: Context Leadership: Context Defines the "Best" and "Worst" Bosses
Author: Shu Yamaguchi
Format/Pages: Shinsho (Pocket size), 400 pages
Release Date: April 15, 2026
ISBN: 978-4-334-109479
Price: 1,210 yen (tax included)
URL: https://books.kobunsha.com/book/b10168118.html
The book drew immense interest even before its release, leading to a massive 10,000-copy reprint within just one week. It has claimed the #1 spot in multiple categories on Amazon, including 'Leadership,' 'Business Administration,' and 'Corporate Management.'
'Context Leadership: Context Defines the "Best" and "Worst" Bosses' (Kobunsha)
◆ Overview
What is the difference between a 'best boss' and a 'worst boss'? Actually, they often do the same things. Depending on the context, one can be a reliable leader who entrusts work to others or a terrible one who irresponsibly dumps tasks. So, where does the difference lie? What skills should one hone to become the best leader?
Existing leadership books have mostly focused on 'behavior'—what great leaders do. Typical examples in recent years include 'Great leaders show vision,' 'Great leaders delegate,' or 'Great leaders listen to subordinates.' This book aims to dispel the 'dangerous misunderstandings' prevalent in leadership discourse and provide a new perspective called 'Context.'
This is a must-read for all business professionals—not just struggling leaders and leadership candidates, but also the younger generation facing communication challenges with their supervisors.
◆ Comment from Shu Yamaguchi
'My new book, "Context Leadership," released on April 15, has gone into reprint within one week of its release.
It is meaningless to consider a leader's qualities or abilities in isolation from the context. Excellent leadership emerges through interaction with context, which is why leaders who achieve results focus on deciphering and editing the relationship between themselves and the context.
My gratitude to everyone who supports me!'
◆ Author Profile
Shu Yamaguchi
Born in Tokyo in 1970. Independent researcher, author, and public speaker. Representative of Leibniz. Graduated from Keio University (Philosophy) and completed a master's program in Art History. He has worked at Dentsu and Boston Consulting Group, engaging in strategy formulation, cultural policy, and organizational development. He received the Business Book Award 2018 Runner-up and HR Award 2018 Excellence Award for 'Why World Elites Train Their Aesthetic Sense.' Other books include 'How to Create the Most Innovative Organizations,' 'Intellectual Productivity of Foreign Consultants,' 'Prescription for a Deteriorating Old Men Society,' 'The Art and Science of Career Choice' (Kobunsha Shinsho), 'The Age of Newtypes,' 'Management Strategy for Life' (Diamond), 'The Future of Business' (President), 'Philosophy as a Weapon' (Kadokawa Bunko), and 'Self-Learning Techniques' (Nikkei Business Humanities Library).
◆ Bibliographic Information
Title: Context Leadership: Context Defines the "Best" and "Worst" Bosses
Author: Shu Yamaguchi
Format/Pages: Shinsho (Pocket size), 400 pages
Release Date: April 15, 2026
ISBN: 978-4-334-109479
Price: 1,210 yen (tax included)
URL: https://books.kobunsha.com/book/b10168118.html