When is the release date for Takuma Otsu's two new books?

They will be released simultaneously on May 20, 2026.

What are the titles and publishers of the new books?

The two books are 'Self-Growth Strategy Book: I Want to Grow, but I Don't Know How to Try' (Kanki Publishing) and 'Why Can It Be Sold in 3 Minutes? The Importance of Time Management Over Sales Pitch' (Diamond Inc.).

What is the content of 'Self-Growth Strategy Book'?

It is a self-growth methodology book that systematically explains how to become a person who can grow independently, focusing on 'five models' for self-improvement, including current status assessment, strength analysis, and techniques for sustaining effort.

What is the main theme of 'Why Can It Be Sold in 3 Minutes?'

It focuses on 'time management' and presents a unique sales theory that emphasizes when to act and the order of actions over the skill of speaking.

Who is Takuma Otsu, the author?

Takuma Otsu is the CEO of Japan Design Co., Ltd., born in 1986. He has worked as a site supervisor and freelancer before founding his company, which operates an online design school with over 50,000 students.

Dual Book Launch: 'Self-Development Strategy' and 'Why It Sells in 3 Minutes' by Takuma Otsubo to be Released Simultaneously

Published May 19, 2026 1:00 PM ・ Updated Jun 14, 2026 4:59 PM ・ 5 min read ・ Source: PR TIMES

Takuma Otsubo, CEO of Japan Design Co., Ltd., will release two new books on May 20, 2026. The books cover self-growth and sales strategies, proposing essential work styles for the AI era.

Japan Design Co., Ltd. (Headquarters: Toshima-ku, Tokyo; CEO: Takuma Otsubo), an agency specializing in school management and sales/marketing support, announces the simultaneous release of two new books by its CEO, Takuma Otsubo, on Wednesday, May 20, 2026. The titles are 'Self-Development Strategy: I want to grow, but I don't know how to work hard' (Kanki Publishing) and 'Why It Sells in 3 Minutes? How to use time more importantly than sales talk' (Diamond Inc.).

While automation by AI progresses, the 'ability to grow oneself' and the 'ability to build trust with others' are being re-evaluated. Otsubo has coached over 50,000 entrepreneurs, freelancers, and business professionals. Based on this extensive experience, he has established a unique business method that 'anyone can reproduce by knowing the correct way.' These two books propose essential work styles for the AI era through the distinct themes of 'self-growth' and 'sales.'

'Self-Development Strategy' is targeted at business professionals who feel lost in their growth journey. It systematically explains how to become talent that grows independently of superiors or companies, focusing on 'five patterns' including assessing one's current position, analyzing strengths and weaknesses, environmental design, resilience after failure, and techniques for persistence. It is presented as a reproducible method rather than a motivational lecture.

On the other hand, 'Why It Sells in 3 Minutes' develops a unique sales theory focused on 'time management,' based on Otsubo's experience in sales since age 15 and his extensive coaching track record. He argues that 'when to move' and 'in what order' determine success more than the quality of the talk itself, explaining the essential differences between those who can sell and those who cannot.

Both books are characterized by translating the author's personal experiences and insights from coaching 50,000+ individuals into concrete actions that can be implemented immediately. This project is a rare publishing initiative, releasing two books from different publishers on the same day.

Book Overview

'Self-Development Strategy' Author: Takuma Otsubo (CEO, Japan Design Co., Ltd.) Publisher: Kanki Publishing | Price: 1,600 yen (tax excl.) URL: https://www.amazon.co.jp/dp/4761210079

'Why It Sells in 3 Minutes' Author: Takuma Otsubo (CEO, Japan Design Co., Ltd.) Publisher: Diamond Inc. | Price: 1,600 yen (tax excl.) URL: https://www.amazon.co.jp/dp/4478122237

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Dual Book Launch: 'Self-Development Strategy' and 'Why It Sells in 3 Minutes' by Takuma Otsubo to be Released Simultaneously

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