Hi there! 👋
I'm KOU.
Based in Tokyo, Japan, I'm a serial entrepreneur who enjoys building things—companies, systems, and ideas. I work across management, finance, and real estate investing, and I'm genuinely passionate about full-stack development, system architecture, AI, and automation. I like turning messy realities into clean, scalable solutions.
ABOUT
I'm a serial entrepreneur with a decade of hands-on execution across business management, finance, real estate investment, and technology. Throughout my journey, I've built and operated companies across Japan and China, leading cross-border teams and structuring investment projects grounded in real-world execution.
My work focuses on designing scalable business systems, combining investment structuring, operational strategy, and data-driven decision-making with a strong foundation in full-stack development, system architecture, AI-assisted analysis, and automation workflows. I enjoy turning complex, messy realities into clear, repeatable systems that actually run in production.
I'm deeply committed to continuous learning and iteration, staying close to both market signals and emerging technologies. I bring together entrepreneurial thinking, technical depth, and execution-focused leadership to build systems, products, and organizations that scale with clarity and intent.
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My Journey
Journey Timeline
Full-Stack Builder & System Designer
Ongoing
Designing and developing internal tools, investment calculators, CRM systems, and automation workflows for real-world business operations. Focused on full-stack development, system architecture, AI-assisted analysis, and process automation to reduce operational friction and scale execution.
Tokyo, Japan
Founder & Managing Director @ Toshin Group China
Nov 2024 - Present
Leading the establishment and operation of the Shenzhen branch, responsible for local business execution, team building, and market expansion. Overseeing client consulting, cross-border project coordination, content-driven marketing, and operational alignment with the Tokyo headquarters. Acting as the bridge between China-based clients and Japan-based investment, real estate, and immigration services.
Shenzhen, China
Founder & Managing Director @ Toshin Group Tokyo
Jun 2022 - Present
Leading a cross-border real estate and investment services group focused on Japan-China markets. Responsible for business strategy, company management, investment structuring, and execution across brokerage, development, and asset management. Actively building internal systems, investor platforms, and data-driven tools using full-stack development, AI, and automation.
Tokyo, Japan
Co-Founder & Operator @ Real Estate Investment Projects
Jan 2020 - Jan 2022
Co-founded and operated multiple real estate investment projects, including residential, income-producing assets, and hospitality-related properties. Designed capital structures, cash-flow models, and operational frameworks, while directly participating in sourcing, due diligence, and on-the-ground execution.
Tokyo & Greater Tokyo Area, Japan
Business Planner & Project Lead @ Construction & Development Company
Jun 2018 - Dec 2019
Planned and evaluated income property projects from a developer's perspective. Led feasibility studies, ROI modeling, and project coordination across design, construction, and sales teams, building a strong foundation in real estate finance and project-based decision-making.
Tokyo, Japan
Real Estate Consultant @ Brokerage Firm
Apr 2016 - May 2018
Started career in real estate brokerage, handling leasing and sales transactions. Gained hands-on experience in client acquisition, negotiations, contracts, and deal execution, developing a practical understanding of market behavior and frontline operations.
Tokyo, Japan
SKILLS
Frontend
Languages
Backend
Cloud & DevOps
Databases
Tools & More
Architecture
Methodologies
LIFE PHILOSOPHY
YOLO
YOU ONLY LIVE ONCE
YOLO doesn’t mean acting recklessly. To me, it means taking full ownership of time, choices, and consequences.
