Femto Partners
VC Fund
Tokyo, Japan
Femto Partners is a VC fund in Tokyo focused on Information Technology and Internet. Femto Partners, a venture capital firm, focuses on early-stage startups in Japan. We are dedicated to nurturing and advancing startups poised to revolutionize existing industries.Our services include:· Providing strategic guidance · Assembling the ideal team · Growing the customer base · Attracting new investorsOur investments areshowing results.Two notable IPO’s are:PLAID, a CX platform and a leading SaaS company in Japan, committed to crafting exceptional customer experiences. https://plaid.co.jp/en/note, a C2C Content Platform that enables a wide range of creators, supporting the creator economy. https://ir.note.jp/enWe are deeply convinced of the transformative power of startups and work closely with entrepreneurs and management teams to achieve this vision.
- Total investments:
- 22
- Last investment:
- Lead investor:
- 5%
Last updated:
For AI agents: llms.txt
Industries Femto Partners invests in
Stages Femto Partners invests in
Countries Femto Partners invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Round size
- Seed
- $460k–$2.2M
- Series B
- $6.7M–$170M
Investment Focus
Industry
- Information Technology 4 (18%)
- Internet 3 (14%)
- Software 2 (9%)
- E-Commerce 2 (9%)
- Employment 2 (9%)
Stage
- Series B 4 (18%)
- Funding Round 4 (18%)
- Seed 3 (14%)
- Series C 3 (14%)
- Series A 2 (9%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
|
Hiroshi Onose
Senior Manager
|
Senior Manager | Total investments: 2 | Find email | |
Isozaki Tetsuya
General Partners
|
General Partners | Total investments: 0 | Find email | |
|
Katsuhiko Okubo
Managing Partner
|
Managing Partner | Total investments: 1 | Find email | |
Sakamoto Takanobu
Director
|
Director | Total investments: 0 | Find email | |
Shingo Yamada
Principal
|
Principal | Total investments: 3 | Find email | |
| See all 6 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
IVRy
|
Ivry offers cloud based telephonic answering service. | $26.2M / Series D / Nov 06, 2025 | |
Henry
|
Henry develops and provides a cloud-based electronic medical record and receipt system for small and medium-sized hospitals. | $6.7M / Series B / Jul 30, 2025 | |
Marsdy
|
Marsdy is a numerical management and update solution that combines robots and manual operations. Combining robots and manual operations can reach the needs of your business and produce the perfect output you desire. It can handle various tasks, from sales and marketing figures to automating back-office accounting.It's headquarters is locatedin Tokyo Minato-ku Shiba, Japan. | $4.7M / Series A / Jun 16, 2025 | |
Leading Mark
|
Leading Mark, a rising human resources startup in Japan. Leading Mark is branching out into mid-career and international hiring. It currently has a one-man team in China working to bring the top Japanese-speaking Chinese students to domestic companies. He also touts his startup’s focus on the average job seeker. “We want to make sure that the usersget the info that he or she needs the most,” he says. Large scale, legacy players can sometimes prioritize the needs of the hiring company, and their commission, over the needs of applicants themselves. This leads to frustration and short-circuited careers. | $10.6M / Venture - Series Unknown / Feb 05, 2025 | |
|
IVRy
|
Ivry offers cloud based telephonic answering service. | $19.1M / Series C / May 23, 2024 | |
|
IVRy
|
Ivry offers cloud based telephonic answering service. | $19.1M / Series C / May 23, 2024 | |
YOUTRUST
|
YOUTRUST is a startup to operate YOUTRUST a referral recruitment platform for side-job change. | Series C / May 13, 2024 | |
|
Marsdy
|
Marsdy is a numerical management and update solution that combines robots and manual operations. Combining robots and manual operations can reach the needs of your business and produce the perfect output you desire. It can handle various tasks, from sales and marketing figures to automating back-office accounting.It's headquarters is locatedin Tokyo Minato-ku Shiba, Japan. | $2.2M / Seed / Oct 10, 2023 | |
|
IVRy
|
Ivry offers cloud based telephonic answering service. | Series B / Mar 01, 2023 | |
|
IVRy
|
Ivry offers cloud based telephonic answering service. | Series B / Mar 01, 2023 | |
| See all 22 investments → | |||
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FAQ
What does Femto Partners invest in?
Femto Partners invests primarily in Information Technology, Internet and Software startups, most often at Series B and Funding Round stage. Most of the 22 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Femto Partners's check size?
Femto Partners typically joins rounds of $460k–$2.2M at Seed and $6.7M–$170M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Femto Partners participates in.
How do I contact Femto Partners?
Public channels for Femto Partners include the website linked on this profile 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.
Who are the partners at Femto Partners?
The team at Femto Partners includes Hiroshi Onose (Senior Manager), Isozaki Tetsuya (General Partners) and Katsuhiko Okubo (Managing Partner), among 6 team members tracked by Shizune. The Team section lists each member with their title, investment count and links.
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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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