Investor Mikey Sano's First Book "The Billionaire's Handbook for the Cunning" Surpasses 50,000 Copies Sold Amid Strong Sales

Raputas Inc. (Shibuya-ku, Tokyo) is pleased to announce that the first book by its representative, Mikey Sano, also known as Yoshihito Sano, titled "The Billionaire's Handbook for the Cunning: 90% of Successful People Have Bad Personalities" (KADOKAWA), has achieved strong sales since its release and has now surpassed a cumulative total of 50,000 copies in print.

◆ Amazon Ranking #1 in Pre-orders, Immediately Reprinted Upon Release!

This book is a collection of Mikey Sano's unique perspectives, who operates the YouTube channel "Mikey's Immoral Sociology" with approximately 83,000 subscribers, "cutting through the world's false common sense." The book received numerous pre-orders and ranked high in many categories, including #1 bestseller in Amazon's "Economics" category (as of December 23, 2025). It recorded an ultra-fast 40,000 copies sold immediately after its release on March 4, 2026, and subsequently surpassed 50,000 copies within three months of its release. It has resonated with a wide range of readers, from business owners and individual investors to those who want to start building their assets.

◆ 267 Amazon Reviews (Average Rating 4.7): Voices of "Broadened Horizons" Pour In.

Amazon customer reviews show that 77% of 267 reviews received a 5-star rating, with an average rating of 4.7 (out of 5 points). (As of July 7, 2026)

Reader Feedback (from Amazon Customer Reviews)

"It broadens your perspective, which has become narrow without you realizing it. This is not a book to affirm your current self, but a book to learn rational thinking."

"A book I want three generations to read. A book that allows you to enjoy the 'thinking game' of capitalist society at a turning point."

"I was worried I wouldn't be able to read it because it was so thick, but I was drawn in as soon as I started reading. The content is unusual for a self-help book."

"It even rationally describes how to spend time in elementary and middle school, and is recommended for families with children." "I wish I had known this sooner. It's a book that makes you want your children to know it quickly."

◆ "The Billionaire's Handbook for the Cunning: 90% of Successful People Have Bad Personalities"

Based on the expertise of Mikey Sano, who has a track record of establishing investment companies and providing management consulting both domestically and internationally, this book explains a mindset for increasing assets, taking into account the latest global affairs and the structure of capitalism. It is content that we hope will be widely read by anyone who aims to build assets from 2026 onwards, regardless of their profession, age, or investment knowledge.

◆ Book Contents (from Table of Contents)

◆ Book Information

Title: The Billionaire's Handbook for the Cunning: 90% of Successful People Have "Bad Personalities"

Author: Yoshihito Mykey Sano

Release Date: March 4, 2026 (Wed)

Price: 2,200 yen (tax included)

Publisher: KADOKAWA

Amazon Product Page:

https://amzn.asia/d/fYQiA8A

◆ About Mikey Sano (Yoshihito Mykey Sano)

Born in Fuji City, Shizuoka Prefecture in 1982. Learned English through movies from elementary school. Entered a US university based on SAT and TOEFL scores. Established an NGO and an investment company in Cambodia in 2017. Received an award in South Korea for his economic contributions as a Japanese national. Began charitable activities in 2019 and was interviewed by UN-related media. Provides consulting for M&A and corporations. Has experience consulting for several thousand individuals.

▼ YouTube Channel "Mikey's Immoral Sociology" (83,000 subscribers)

https://www.youtube.com/channel/UCgXl5H1V4Fq4q0_gJYXR3bw

◆ Company Overview

Company Name: Raputas Inc.

Representative Director: Yoshihito Mykey Sano

Location: 3-23-6 Nishihara, Shibuya-ku, Tokyo

URL: https://mykey-sano.com/raputasu/