FAInance Lab | Management Consulting, DX & English Business Support

About

"Advancing Japan into a world-class accounting nation
through the power of technology and data."

By enhancing the transparency and utilization of financial information, we improve the quality of management decisions at Japanese companies. We contribute to strengthening global competitiveness by modernizing decision-making at small and medium enterprises through data-driven approaches.

Accounting

×

Data Analysis

×

Generative AI

×

English

An integrated consulting service across all four domains — virtually nonexistent in the market.

Results

99%

Review Hours Reduced

160 hrs → 1 hr

4days

300K-Row Accounting Analysis

Solo, from day one

1M+ rows

ERP Migration Variance Analysis

Using Power Query

Project Cases

Listed Company — Beauty / Healthcare Industry, Accounting Dept. 2024–2025

Variance Analysis Report for Audit Firm Submission

BackgroundA significant data discrepancy arose in a subsidiary acquired through M&A. Urgent submission to a Big 4 audit firm was required, but the team was under-resourced to respond in time.

ApproachHandled end-to-end as a solo contributor — from raw data intake to analysis design, root cause identification, and report creation. Interviewed managers to understand data structure and business context, then delivered a clear, audit-ready report. Completed in 4 days vs. the estimated 2–4 weeks.

99% Management review hours reduced from 160 to 1. Report submitted to Big 4 auditor (EY) with zero revisions.

Excel (High-Volume Processing) Data Structure Analysis Variance Analysis Design Audit-Ready Reporting Requirements Gathering

Listed Company — Beauty / Healthcare Industry, Accounting Dept. 2024–2025 ／ ~8 months

ERP Migration Project — Accounting Data Variance Analysis

BackgroundA company-wide ERP migration involving 10 years of accumulated accounting data (1M+ rows). Required ensuring data accuracy and consistency while running monthly close processes in parallel.

ApproachJoined as one of a 3-person team, then elevated to solo ownership of the full scope — including analysis design typically handled by a manager — due to Excel processing speed (3× faster than peers) and analytical depth. Simultaneously handled foreign currency transactions, consolidated balance reconciliation, and month-end close across departments.

8mo Migration completed with full data integrity across all departments. Zero delays in month-end close and financial disclosure. Reduced operational and audit risk for management.

Power Query (1M+ rows) ERP Migration Validation Cross-Functional Coordination FX Transaction Processing Task Management

Flow

How It Works

Custom Quote

1

Contact Us

Send us a brief overview of your inquiry via the contact form on our website.

2

Menu & Proposal

Based on your inquiry, we will present the most suitable service and a tailored quote.

3

Service Begins

Upon agreement and contract signing, service delivery begins promptly.

Corporate clients, please contact us via the inquiry form (invoice payment available).
For certain services, we require a Non-Disclosure Agreement (NDA) prior to commencement.

Service

Credentials

01

JCCI Bookkeeping Certification Level 2 (Japan Chamber of Commerce and Industry)

02

CPA Examination — Study Background

03

TOEIC 715

04

ExcelCamp Master Course Graduate

05

Tokyo SME Support Organization Plan Consulting — Completed in the first session (normally 3–5 sessions required)

06

2nd Dan Kendo

08

Talent & Model — Media presence and communication reach

09

Qualified Invoice Issuer — Registration No. T2810315027693

Profile

Miki

Management Consultant / FAInance Lab™ Founder

Tokyo Gakugei University Affiliated Elementary School · Waseda University · Tokyo University Graduate School (Joho Gakkan) · 2nd Dan Kendo

Holds specialized expertise in accounting, data analysis, generative AI, and English, with practical experience in finance and data fields at multiple major corporations. With a background from Tokyo University's Graduate School of Information Studies, brings particular strengths in data analysis, data-driven decision making, and cutting-edge IT technology.

The foundation of her career is rooted in the expertise and influence of her father, a former Big Four professional who established himself as an independent management consultant. Deeply inspired by her father's decades of professional achievement in accounting and English, she founded this company to bring those disciplines into a new era — combining them with advanced DX expertise and modern communication capabilities.

Also active as a talent and model, she brings a modern media presence and strong communication reach.