Kotaro Chiba
Management Advisor @ Wamazing
Tokyo, Japan
Kotaro Chiba is a seed investor at Wamazing in Tokyo focused on Information Technology and Content. Kotaro Chiba is the founder of ChibaDojo Fund. Kotaro Chiba attended Keio University.
- Total investments:
- 78
- Last investment:
- Lead investor:
- 9%
Last updated:
For AI agents: llms.txt
Industries Kotaro Chiba invests in
Stages Kotaro Chiba invests in
Countries Kotaro Chiba invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $215k–$19M
- Series A
- $841k–$14M
- Venture - Series Unknown
- $947k–$11M
Investment Focus
Industry
- Information Technology 11 (14%)
- Content 8 (10%)
- Software 8 (10%)
- E-Commerce 8 (10%)
- Apps 7 (9%)
Stage
- Seed 32 (41%)
- Venture - Series Unknown 13 (17%)
- Series A 9 (12%)
- Angel 6 (8%)
- Series B 5 (6%)
Country
- Japan 62 (79%)
- United States 2 (3%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Paradigm AI
|
Paradigm AI is an entertainment firm that produces songs and creates virtual human idols using generative AI. | Seed / Jun 29, 2025 | |
Nstock
|
Nstock is specialized in developing SAAS based applications for ecosystem. | $21M / Seed / Sep 09, 2024 | |
Oyraa
|
Oyraa provides online meetings and conference apps. Their interpreters will help you communicate not only in business but also in personal situations, such as in hospitals and real estate agencies. | $1.7M / Seed / Jun 10, 2024 | |
MOV
|
MOV is a technology platform. They offer SaaS for stores that can collectively manage word-of-mouth sites and visualize and analyze customer feedback. It distributes inbound market data, news, and know-how to domestic companies. Their services include inbound support and consulting. | $9.6M / Series B / May 21, 2024 | |
Orange
|
Orange is a developer of a variety of deep-learning models with a focus on computer vision and natural language processing for comics. | $19M / Seed / May 06, 2024 | |
|
Paradigm AI
|
Paradigm AI is an entertainment firm that produces songs and creates virtual human idols using generative AI. | Seed / May 03, 2024 | |
Japan Wind Tunnel Manufacturing
|
Japan Wind Tunnel Manufacturing focuses on the development and production of compact wind tunnel testing systems for wind power generators. The company designs technologies that enable stable airflow at shorter tunnel lengths and reduced system size. Its equipment is used for testing and evaluating wind power generation systems and supports thereduction of infrastructure and operational requirements associated with conventional wind tunnel facilities. | $4.4M / Venture - Series Unknown / Sep 01, 2022 | |
Contrea
|
MediOS is a cloud-based informed consent (IC) assistance system that assists medical professionals in focusing on essential patient explanations. Many doctors respect explanation time and go out of their way to clarify things so that patients can receive therapy with confidence and peace of mind. | $1.2M / Seed / Nov 16, 2021 | |
Cocon
|
GMO Cyber Security is a software company that specializes in the field of vulnerability diagnosis for applications. It simulates web and cloud service attacks, visualizes attack risks such as personal information leaks and system hijacking, and assesses security resilience. Look into whether there are any security flaws in Android/iOS apps.There are two types of plans: a light plan for only dynamic analysis and a full plan for investigating down to the source code level. In cloud environments such as AWS, Azure, and GCP, a high-performance scanning tool detects issues such as malware, OS and software vulnerabilities, and misconfigurations. | $18.7M / Convertible Note / Dec 08, 2020 | |
KAUCHE
|
X Asia creates enjoyable shopping experience. | $24.9M / Seed / Nov 30, 2020 | |
| See all 78 investments → | |||
Co-Investors
About Wamazing
WAmazing provides free subscriber identification module (SIM) cards that allow foreign travelers to register before their arrival in Japan. Through an app, WAmazing also provides tourists with free internet services of up to 500MB. The service aims to prevent visitors from being locked out of free wifi because of sign-up pages in Japanese thatdemand a local phone number.WAmazing was founded in 2016 and is based in Tokyo, Japan.
Wamazing Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Fumiko Kato
CEO
|
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|
Kotaro Chiba
Management Advisor
|
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Kotaro Chiba
Management Advisor
|
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Yuichi Tateno
CTO
|
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Yusuke Asakura
Management Advisor
|
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FAQ
What does Kotaro Chiba invest in?
Kotaro Chiba invests primarily in Information Technology, Content and Software startups, most often at Seed and Venture - Series Unknown stage. Most of the 78 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Kotaro Chiba's check size?
Kotaro Chiba typically joins rounds of $215k–$19M at Seed, $841k–$14M at Series A and $947k–$11M at Venture - Series Unknown. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Kotaro Chiba participates in.
How do I contact Kotaro Chiba?
Public channels for Kotaro Chiba include LinkedIn, X (Twitter) and Facebook. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Kotaro Chiba last invest?
The most recent investment recorded for Kotaro Chiba closed in Jun 2025. Shizune tracks 78 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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