Keisuke Honda
Angel Investor @ Index Ventures
Chuo, Japan
Keisuke Honda is a Series A investor at Index Ventures in Chuo focused on FinTech and Software. Keisuke Honda is the Founder & CEO of Now Do.
- Total investments:
- 111
- Last investment:
- Lead investor:
- 34%
Last updated:
For AI agents: llms.txt
Industries Keisuke Honda invests in
Stages Keisuke Honda invests in
Countries Keisuke Honda invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $1M–$11M
- Series A
- $5M–$35M
- Series B
- $15M–$100M
Investment Focus
Industry
- FinTech 10 (9%)
- Software 10 (9%)
- Financial Services 10 (9%)
- Artificial Intelligence 10 (9%)
- SaaS 8 (7%)
Stage
- Series A 26 (23%)
- Seed 23 (21%)
- Series B 20 (18%)
- Series C 14 (13%)
- Venture - Series Unknown 8 (7%)
Country
- Japan 19 (17%)
- United States 18 (16%)
- United Kingdom 10 (9%)
- Czech Republic 3 (3%)
- Belgium 2 (2%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Icaria's mission is to create a new society in which people will not lose their lives by using urine tests to provide "early, painless and accurate early diagnosis of cancer."It is known that detecting cancer early increases the survival rate 5 to 10 times and greatly improves the prognosis. However, it is not unusual for manycancers to have no subjective symptoms, and when they become aware they have progressed to a stage where treatment is impossible. The most effective way to detect cancer at an early stage that can be treated is to have regular and high-precision cancer diagnosis, but existing cancer diagnosis is painful and However, many of them are not accurate enough and are not suitable for regular diagnosis and early stage diagnosis. | $24.4M / Series D / Aug 18, 2026 | ||
Snack Technologies
|
Snack Technologies specializes in the development and operation of “SnaTech,” an innovative business support application designed for snack bars, helping operators streamline daily management, improve customer engagement, optimize inventory and sales tracking, and enhance overall business efficiency through digital solutions tailored to the foodand hospitality industry. | $1.4M / Seed / Jun 08, 2026 | |
| MainFunc is a technology company building AI‑driven productivity tools, with a focus on enabling users, including knowledge workers and teams, to get real work done via autonomous AI agents. The company’s flagship product is Genspark, an AI workspace that automates tasks by collecting information from web searches, emails, meetings, and calls,processing it through a “Super Agent” that orchestrates many specialized AI sub‑agents, and generating outputs like full reports, slide decks, spreadsheets, or even prototype applications.In addition to productivity automation, MainFunc markets Genspark as an enhanced search and research tool: when users query the web, Genspark generates consolidated, bias‑reduced summaries using multiple underlying large‑language or multimodal models rather than relying on traditional keyword‑based ranking. | $85M / Series B / Mar 12, 2026 | ||
| Jizai is a provider of artificial intelligence technology, offering AI solutions, software-as-a-service products powered by AI, and robots that utilize AI capabilities for businesses across various industries. The company focuses on generative AI, large language models (LLMs), and robotics, offering customizable AI platforms and automation tools.It also engages in AI consulting and research collaborations. | Seed / Dec 09, 2025 | ||
| Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas. It is a spin-off startup from the National Institute for Fusion Science (NIFS) in Japan that provides a fusion reactor based on the stellarator design, a magnetic confinement approach that enables inherently stable,continuous plasma operation. | $14.9M / Series A / Jul 11, 2025 | ||
| Mint Town is a specialized software development company that focuses on the strategic planning, development, and operation of Web3 games and platforms. The focus of the company is on creating a new economy and entertainment medium through blockchain technology and ideas. | $4.8M / Venture - Series Unknown / Mar 10, 2025 | ||
| Icaria's mission is to create a new society in which people will not lose their lives by using urine tests to provide "early, painless and accurate early diagnosis of cancer."It is known that detecting cancer early increases the survival rate 5 to 10 times and greatly improves the prognosis. However, it is not unusual for manycancers to have no subjective symptoms, and when they become aware they have progressed to a stage where treatment is impossible. The most effective way to detect cancer at an early stage that can be treated is to have regular and high-precision cancer diagnosis, but existing cancer diagnosis is painful and However, many of them are not accurate enough and are not suitable for regular diagnosis and early stage diagnosis. | $22M / Series C / Dec 05, 2024 | ||
| Reiwa Travel Company Overview Reiwa Travel is a digital travel agency with the mission to "Design New Travel Experiences." We aim to offer innovative experiences and new societal value in international travel. Since April 2022, we have been offering the international travel booking app 'NEWT'. Our goal is to maximize the digitaltransformation (DX) of booking and management tasks in the travel industry, providing unprecedented “easy, affordable, customizable, and secure” package tours. We are committed to creating social value through the experience of international travel.International Travel Booking App 'NEWT' Service Overview 'NEWT' is an international travel booking app designed to create new travel experiences for new era. It offers an easy booking process, achieves cost-effective pricing, creates customizable trips that meet individual needs, and provides the security that makes travelers feel they made the right choice with NEWT.International Travel Booking App 'NEWT': https://app.adjust.com/iidu9wiWeb version 'NEWT': https://newt.net/ | $33.5M / Series A / Sep 09, 2024 | ||
| Turing develops and manufactures fully autonomous vehicles. | $9.3M / Seed / Jul 01, 2024 | ||
| We started Unite because we saw a problem.Two problems, in fact. A problem faced by marketplace sellers like you, who see high- quality traffic on your pages but have no way of retargeting shoppers who don’t end up purchasing, leaving potential sales on the table. And a problem faced by the marketplaces where you sell, which win by helping youdrive sales but aren’t equipped to offer you the sorts of online advertising tools like retargeting pixels, audience creation, and campaign management platforms that big brands have been using for years.That’s where we come in. Understanding these constraints and sharing the frustration faced by both sellers and marketplaces over lost revenue and lost customers, we created the perfect platform to put the industry’s most powerful advertising technology capabilities in the hands of people like you, building them into the marketplaces where you already sell. The result? Higher traffic and higher conversion rates. In other words, higher sales.Today, thousands of sellers across the Internet are using Unite to advertise like a big brand and drive sales. It’s time to join them. | $3M / Seed / Jun 11, 2024 | ||
| See all 111 investments → | |||
Co-Investors
About Index Ventures
Index Ventures is a venture capital company that provides investment capital and strategic support to early-stage and growth-stage technology enterprises across sectors such as software, fintech, healthcare, and consumer services. It engages with entrepreneurial teams to assess business models, support scaling efforts, and provide guidance through successive development phases. The company’s services include sourcing investment opportunities, conducting due diligence, structuring financing deals, and offering ongoing advisory interactions with portfolio founders. Index Ventures also maintains a network of industry relationships and resources aimed at facilitating connections between founders, investors, and market opportunities. Its focus spans from initial seed rounds through later financing stages to help portfolio companies pursue expansion and market entry efforts.
Index Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Georgia Stevenson
Partner
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Gerald Rimer
Team Member
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Hannah Seal
Principal/Partner
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Jan Hammer
Investor & Partner
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Julia Andre
Principal/Partner
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FAQ
What does Keisuke Honda invest in?
Keisuke Honda invests primarily in FinTech, Software and Financial Services startups, most often at Series A and Seed stage. Most of the 111 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Keisuke Honda's check size?
Keisuke Honda typically joins rounds of $1M–$11M at Seed, $5M–$35M at Series A and $15M–$100M 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 Keisuke Honda participates in.
How do I contact Keisuke Honda?
Public channels for Keisuke Honda include LinkedIn and X (Twitter). 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 Keisuke Honda last invest?
The most recent investment recorded for Keisuke Honda closed in Aug 2026. Shizune tracks 111 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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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