Kunihisa Miyamoto Angel Investor
Angel Investor · Listed Company Founder

From founding to IPO to exit — now backing the next generation.

I built ネットマーケティング from zero to a TSE First Section listing, then sold to Bain Capital for ¥13.5 billion. Now I invest my own capital in seed-stage founders who aim to build listed companies.

994
Companies Met
29
Investments Made
¥4.37B
Total Invested
12
VC LP Commitments
Investment Overview

How I Invest

Primarily seed-stage, with tickets of ¥5M–¥20M. I deploy approximately ¥100M annually across 6 new companies, plus follow-on investments in existing portfolio.

Stage
Pre-seed / Seed / Series A
Primary focus on seed stage
Ticket Size
¥5M — ¥20M
Up to ~¥100M with co-investors
Annual Deployment
~¥100M / year
¥20M × 3 + ¥5M × 3 + follow-on
Sectors
IT / Web Services
AI, SaaS, Matching, DX, EC, Fintech
Full Investment Thesis →
Why Me

A founder who has walked the entire path

I don't advise from theory. I built, scaled, listed, and exited a company myself — and now I bring that full lifecycle experience to every founder I back.

1998
Keio University SFC → Nissho Iwai (now Sojitz)
Graduated from Keio's Faculty of Policy Management. Joined a major trading company.
2000
Transferred to ITX (VC Division)
Experienced both the investment side and operating side of venture capital.
2004
Founded Net Marketing Inc.
Started with B2B advertising business. Built the company from zero revenue to a multi-billion yen enterprise.
2012
Launched Omiai
Created Japan's leading matchmaking app, scaling to millions of users with sophisticated marketing and unit economics.
2017–2019
JASDAQ → TSE 2nd → TSE 1st Section
Rapid ascent through all three tiers of the Tokyo Stock Exchange in just two years.
2022
Bain Capital TOB — ¥13.5 Billion Exit
Company acquired by U.S.-based Bain Capital. Resigned as CEO to pursue full-time angel investing.
2022–
Full-Time Angel Investor
Met 994 founders, invested in 29 companies totaling ¥437M. LP in 12 VC funds. Qualified institutional investor.
Read the Full Story →
Post-Investment Support

What I bring beyond capital

My investment style is "Hands-if" — I'm always available when you need me, without getting in your way. Here's where I add the most value.

Strategy

Business Strategy

18 years of operating experience across B2B advertising and B2C matching services. I help founders think through market timing, competitive moats, and go-to-market.

Capital

Capital Strategy

From seed valuation to IPO cap table — I help with fundraising structure, dilution planning, and JKISS vs. preferred stock decisions from day one.

IPO

IPO Preparation

Direct experience navigating JASDAQ → TSE First Section. I know audit firms, securities houses, and the governance requirements inside out.

Network

VC & Angel Introductions

Connected to 63 VCs and 20+ prominent angels. I actively bridge founders to the right investors through co-investment deals — the #1 request from portfolio companies.

Team

Organization Building

Scaled from 1 to 200+ employees. I share frameworks on hiring, evaluation systems, management layers, and avoiding the organizational breakdowns I experienced myself.

Exit

M&A / Exit Advisory

Went through a ¥13.5B TOB process personally. I explain the real differences between private M&A and public-company TOB from firsthand experience.

Portfolio Highlights

Selected investments

29 companies backed across AI, SaaS, matching platforms, DX, and fintech — with a focus on unicorn-potential seed-stage startups.

KB-eye (ケイビーアイ)
AI-powered security company. Received the highest-ever corporate valuation of ¥100 billion on the TV show REAL VALUE. Co-founded by a 20-year security industry veteran and an AI specialist.
AI Security Seed
Cowmel (カウメル)
Identified as a unicorn candidate. Received follow-on investment based on an outstanding management team and strong growth trajectory.
Platform Follow-on
Yondemy (ヨンデミー)
AI-powered children's reading education platform. Building personalized reading experiences that nurture a love of books through adaptive AI.
AI EdTech Seed
issues (イシューズ)
Civic engagement platform connecting citizens with politicians. Enabling direct dialogue to transform democratic participation.
Platform CivicTech Seed
SILK THE RICH
Premium silk-based hair care D2C brand. Data-driven marketing in the beauty & personal care category.
D2C Beauty Seed
+ 22 More Companies
Across AI, SaaS, matching, DX, EC, D2C, fintech, and more. Each selected for unicorn potential and founder quality.
Various Seed
View All Investments →
Insights from X

Perspectives on startups and investing

Selected posts from @an0gel0 — where I share lessons from founding, IPO, exit, and angel investing.

Aug 2025 Founding → IPO
◆ From Founding to IPO — 15 Steps
First, build a foundation so the company doesn't die. Step 0: Muster the courage to leave your current job and commit to founding. (For high-earners, this is the biggest hurdle.) Step 1: Build a cash-cow business generating ¥5M gross profit per month...
Read on X →
Aug 2023 Investment Style
◆ My Ideal Investment Style: "Hands-if"
There are many investment styles — hands-on, hands-off, hands-if. I believe "hands-if" (I'm here if you need me, just reach out) is the ideal style. The founder should be able to run the business freely...
Read on X →
Sep 2025 Market Observation
70% of founders I meet now say "we're an AI company"
But they're not actually developing AI themselves (that would cost trillions) — most are just piggybacking on it. I'm not tired of hearing it yet, but I'm getting close. Companies that simply bolt AI onto their keyword list...
Read on X →
Aug 2025 Portfolio News
Portfolio company KB-eye receives ¥100B valuation on REAL VALUE
My portfolio company, AI security firm KB-eye, appeared on the show and received the highest corporate valuation in the program's history — ¥100 billion. I invested over 3 years ago in 2022...
Read on X →
More Insights →
Media

Featured in

Forbes JAPAN

The Listed Company Founder Who Became an Angel Investor

Feature story on the ¥13.5B exit and transition to full-time angel investing.

SmartRound

"I want to see the landscapes I couldn't see on my own"

In-depth interview on investment philosophy, decision framework, and the journey from CEO to angel.

X / Twitter

@an0gel0 — 8,900+ Followers

Sharing insights on founding, IPO, capital strategy, and angel investing. 1,400+ posts.

ANGEL PORT

Angel Investor Portfolio

Official angel investor profile. Goal: 60 investments, ¥1B total by 2030.

Building the next listed company?

I'm looking for founders with the resolve and preparation to climb the unicorn mountain. Whether you're at pre-seed or raising your seed round — let's talk about your vision, capital strategy, and path to IPO.