TOKIUM CEO Kenichi Kurosaki's Book 'Accounting AI Agent' Goes into Reprint Just 3 Weeks After Release
TOKIUM CEO Kenichi Kurosaki's first book, 'Accounting AI Agent,' has gone into reprint just three weeks after its release, having achieved #1 rankings in two Amazon categories and at Maruzen Marunouchi and Yurindo Atre Ebisu stores.
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TOKIUM Inc. (Headquarters: Chuo-ku, Tokyo; Representative Director: Kenichi Kurosaki; hereinafter "TOKIUM"), which provides accounting AI agents, announced that the first book by its Representative Director Kenichi Kurosaki, titled 'Accounting AI Agent: Work Flows with "Digital Workforce"' (Cross Media Publishing), has been decided for a reprint. The book achieved the #1 spot in Amazon's best-seller rankings for the Tax Accounting category and the Reference Books/White Papers for Industrial Research category, and also ranked #1 weekly at Maruzen Marunouchi Main Store and Yurindo Atre Ebisu Store. Driven by expectations for AI agents to address the declining working population, the reprint was decided just three weeks after its release.
■ Book Overview
It is estimated that Japan will face a labor shortage equivalent to 3.84 million people by 2035 (Persol Research and Consulting & Chuo University, "Labor Market Future Projections 2035"). This book addresses this challenge by outlining a path to utilize AI as an autonomous "digital workforce."
Based on the author's practical knowledge gained from over 13 years of experience in automating accounting operations, the book explains everything from AI implementation design to organizational transformation. Furthermore, it systematically introduces for the first time TOKIUM's proprietary business design method, "Microtask Decomposition," developed in its development sites. This method, which breaks down complex tasks into minute units and clearly separates tasks assigned to AI from those handled by humans, is applicable not only to accounting but also to all back-office operations.
■ Book Information
Book Title: 'Accounting AI Agent: Work Flows with "Digital Workforce"'
Author: Kenichi Kurosaki (Representative Director, TOKIUM Inc.)
Release Date: March 6, 2026 (Friday)
Publisher: Cross Media Publishing (Released by Impress)
Price: 2,200 yen (tax included)
ISBN: 978-4-295-41184-0
Amazon: https://amzn.asia/d/0de6ZUqC
Rakuten Books: https://books.rakuten.co.jp/rb/18487391/
■ Author Profile
Kenichi Kurosaki
Representative Director of TOKIUM Inc. Born in 1991 in Tokyo. After graduating from Musashi High School and Junior High School, he enrolled in the College of Information Science, Information Media Arts and Sciences at the University of Tsukuba. While in high school, he worked as a technical writer, specializing in security measures for web services and smartphone applications. In 2012, while still in university, he established BearTail Inc. (now TOKIUM). Starting with the development of the household budget app "Dr.Wallet," he went on to provide an expense management system in 2016 and an invoice reception system in 2020. In 2025, he began offering the accounting AI agent. He is committed to solving challenges in corporate expenditure management operations.
■ About Accounting AI Agent "TOKIUM"
Accounting AI Agent "TOKIUM" is a service where AI, professional staff, and cloud systems are highly integrated, autonomously making judgments and executing tasks like a single dedicated staff member, thereby automatically completing corporate accounting operations.
Through this service, all business professionals are freed from routine accounting tasks such as business trip arrangements, pre-approvals, and reconciliation.
URL: https://www.keihi.com/keiri-ai-agent/
■ About TOKIUM Inc.
Established: June 26, 2012
Representative Director: Kenichi Kurosaki
Location: Nomura Real Estate Ginza Building 12F, 6-18-2 Ginza, Chuo-ku, Tokyo
Capital: 100 million yen
Business Activities: Provision of accounting AI agents such as expense management and invoice management
FAQ
Who is the author of 'Accounting AI Agent'?
The author is Kenichi Kurosaki, Representative Director of TOKIUM Inc. He has been involved in automating accounting operations for over 13 years.
What is the main reason for the book's reprint?
In addition to its popularity, having achieved #1 in two Amazon categories and major bookstores, there is growing anticipation for AI agents in response to the declining working population.
What is the 'Microtask Decomposition' method?
It is TOKIUM's unique business design method that breaks down complex tasks into minute units, clearly separating tasks for AI and humans. It is applicable to back-office operations beyond accounting.