Katsuyuki (Kevin) Hasegawa

General Partner at Dentsu Ventures, Partner at Bricks Fund Tokyo, Managing Partner & Co-Founder of PrimePartners,Inc.

📍 Tokyo, Tokyo, Japan🔄 Updated August 2026💼 29 investments📅 15 years investing🗓 Last invested Mar 2026
VC🌍 Japan20+ investmentsInvested this year
29
Total investments
9
Early stage
11
Mid stage
3
Late stage
15y
Years active

Portfolio

26 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
Mar 2026
Enabling everyone to create games and interactive experiences.
Investor
May 2024
Skyflow is a data privacy vault, delivered as a simple and elegant API. Our founders wanted to radically transform how businesses handle their users’ financial, healthcare and other personal data — the data that powers the digital economy. Inspired by the data vaults that leaders like Apple and Netflix built to handle customer data, our vision was to deliver the same kind of data privacy vault as a simple and elegant API, something any developer could easily build into their application, the same way they use Stripe, Twilio, or Okta.
Investor
Jan 2024
ZymoChem is breakthrough science for a fossil-free future. We accelerate the transition to a real-zero economy by developing bio-based materials for everyday products. Are you interested learning more about how our high performance biomaterials are replacing petrochemical ingredients? We are seeking candidates who are motivated by science & innovation and have a passion to push the boundaries of materials performance. We are collaborative, multidisciplinary, and relentlessly committed to creating a chemicals & materials industry in tune with the 21st century. If this sounds exciting, we want to hear from you! Please visit: www.zymochem.com/careers ZymoChem. Creating the Fossil-free Future.
Investor
Aug 2023
Inworld AI is a realtime AI model and infrastructure company, and the leading consumer AI infrastructure platform. Inworld provides industry-leading realtime generative models, including the world’s #1-ranked voice AI models, intelligent model routing and optimization, and an Agent Runtime, enabling developers to build and deploy interactive AI applications to millions of concurrent users. Inworld primarily serves use cases where realtime interaction and sophisticated agent capabilities are critical, such as companion apps, developer assistants, and agents for learning & education, health & wellness, interactive media and enterprise. At its core, Inworld is a product-oriented research lab of top AI researchers and engineers. The founding team led product for LLMs at DeepMind and built Dialogflow, the conversational AI platform acquired by Google. Inworld has raised $125M+ from Lightspeed, Kleiner Perkins, Founders Fund, CRV, Stanford, Microsoft M12, Meta, Intel Capital, Samsung NEXT, LG Tech Ventures, and Bitkraft among others.
Investor
Sep 2022
We create foundational infrastructure to accelerate web3 adoption! Come join us! We are looking for researchers and engineers, product builders, entrepreneurs in fields spanning distributed systems, cryptography, compiler & VM, programming language, verification, and game theory.
Investor
Aug 2022
Solsten is the AI that understands people. We combine psychology and artificial intelligence to decode what drives audiences so you can build products, campaigns, as well as AI agents that truly resonate, engage, and build trust.
Investor
Apr 2021
Overtime empowers the next generation of athletes and fans across digital platforms by building disruptive new sports leagues and developing and distributing original sports content. Overtime owns and operates OTE and Overtime Select in basketball, OT7 in football, and OTX in boxing while producing over 150 pieces of original sports content weekly for its 115MM+ global followers. The company is a key partner to marquee sports leagues and rights holders worldwide, including the NFL and NBC Sports for the Olympic Games. Overtimes business model is driven by sponsorships, e-commerce, licensing and media rights. Overtime is funded by top VC firms, strategic investors, industry leaders, and athletes, including Liberty Media Corporation, Amazon, Andreessen Horowitz, Counterpoint Global (Morgan Stanley), Sapphire Sport, Winslow Capital, Spark Capital, Micromanagement Ventures (the family of the late David Stern), Black Capital, Blackstone Strategic Partners, Alexis Ohanian, Bezos Expeditions, Drake, Quavo and 40+ NBA and NFL stars including Carmelo Anthony, Kevin Durant and Trae Young. 5 NBA team owners and over 6% of active NBA players have invested in Overtime. For open positions, visit: https://www.teamworkonline.com/sports-technology-jobs/Overtime-overtime-elite-jobs/overtime
Investor
Dec 2019
Meat made from cells. We’re building the future you’re hungry for. *all meat shown is UPSIDE meat https://linktr.ee/upsidefoods Cultivated meat is new to many of us, and here at UPSIDE, we encourage education, learning, and fact-based debate. We ask that, in accordance with our values, you keep the conversation respectful to each other and to us. Thanks!
Investor
Nov 2018
Narvar is the #1 platform for intelligent personalization “beyond buy,” trusted by 1,500+ of the world’s most admired brands—including Sephora, Levi’s, Sonos, Warby Parker, and LVMH. Powered by IRIS™, Narvar leverages billions of data points to create seamless experiences that build trust, safeguard operations, and unlock sustainable growth. Recognized multiple times by Fast Company as one of the most innovative companies, Narvar is redefining the post-purchase journey—from returns and exchanges to tracking, notifications, and fraud prevention—simplifying the everyday lives of consumers while driving business success for retailers.
Investor
Oct 2018
Clear Labs harnesses the power of next-generation sequencing (NGS) to simplify complex diagnostics for clinical and applied markets. By creating a fully automated platform that brings together DNA sequencing, robotics and cloud-based analytics, Clear Labs democratizes genomics applications to deliver increased clarity. Clear Labs’ turnkey platform accelerates outcomes and improves accuracy - from food-borne pathogens to infectious diseases, including SARS CoV-2. With a novel approach, Clear Labs is helping the world better understand, track and mitigate tomorrow’s novel pathogens.
mid stageBiotechnology
Investor
Aug 2018
Built in San Francisco, Hoodline is an expanding neighborhood news and information company supported by talented writers and deep technical expertise. Were now in 40 cities, and expanding.
Investor
Apr 2018
Based in Mountain View, Arraiy is leveraging machine learning and computer vision to unlock the next generation of visual storytelling. With self-improving AI at the core of its software products, Arraiy makes it easy for broadcasters and visual content creators to seamlessly integrate real and virtual worlds.
Investor
Apr 2017
Our mission is to detect cancer early, when it can be cured. We are working to change the trajectory of cancer mortality and bring stakeholders together to adopt innovative, safe, and effective technologies that can transform cancer care. We are a healthcare company, pioneering new technologies to advance early cancer detection. We have built a multi-disciplinary organization of scientists, engineers, and physicians and we are using the power of next-generation sequencing (NGS), population-scale clinical studies, and state-of-the-art computer science and data science to overcome one of medicine’s greatest challenges. GRAIL is headquartered in Menlo Park, California, with locations in Washington, D.C., North Carolina, and the United Kingdom. It is supported by leading global investors and pharmaceutical, technology, and healthcare companies. For more information, please visit grail.com. Community Guidelines: https://bit.ly/3xigb24
Investor
Jan 2017
Two Bit Circus is a modern high-tech circus exploring the future of fun. The team of artists, inventors, educators and performers build big games, tell stories with technology, and make liberal use of lasers, fire and robots. The builds and operates Micro-Amusement Parks with a flagship in the Arts District of Downtown Los Angeles. They’ve captured action sports content in 360 video for brands like NFL, NBA, Indy and the Olympics and then installed VR activations at the Super Bowl, All Star games and at Verizon stores. They launched a high-tech traveling carnival to inspire the world about the possibilities of STEM+Art with coverage including CNN, Fast Company, and USA Today. Many of the team created the viral This Too Shall Pass music video for OK Go that garnered 50+ million views on YouTube. For more information, visit twobitcircus.com or follow @TwoBitCircus.
Show all 26 investments ↓
Experience · 33 entries
All (33)
Investments (29)
Founder (1)
Board (1)
2026
Investor
Mar 2026
Enabling everyone to create games and interactive experiences.
2025
2024
Investor
May 2024
Skyflow is a data privacy vault, delivered as a simple and elegant API. Our founders wanted to radically transform how businesses handle their users’ financial, healthcare and other personal data — the data that powers the digital economy. Inspired by the data vaults that leaders like Apple and Netflix built to handle customer data, our vision was to deliver the same kind of data privacy vault as a simple and elegant API, something any developer could easily build into their application, the same way they use Stripe, Twilio, or Okta.
Investor
Jan 2024
ZymoChem is breakthrough science for a fossil-free future. We accelerate the transition to a real-zero economy by developing bio-based materials for everyday products. Are you interested learning more about how our high performance biomaterials are replacing petrochemical ingredients? We are seeking candidates who are motivated by science & innovation and have a passion to push the boundaries of materials performance. We are collaborative, multidisciplinary, and relentlessly committed to creating a chemicals & materials industry in tune with the 21st century. If this sounds exciting, we want to hear from you! Please visit: www.zymochem.com/careers ZymoChem. Creating the Fossil-free Future.
2023
Investor
Aug 2023
Inworld AI is a realtime AI model and infrastructure company, and the leading consumer AI infrastructure platform. Inworld provides industry-leading realtime generative models, including the world’s #1-ranked voice AI models, intelligent model routing and optimization, and an Agent Runtime, enabling developers to build and deploy interactive AI applications to millions of concurrent users. Inworld primarily serves use cases where realtime interaction and sophisticated agent capabilities are critical, such as companion apps, developer assistants, and agents for learning & education, health & wellness, interactive media and enterprise. At its core, Inworld is a product-oriented research lab of top AI researchers and engineers. The founding team led product for LLMs at DeepMind and built Dialogflow, the conversational AI platform acquired by Google. Inworld has raised $125M+ from Lightspeed, Kleiner Perkins, Founders Fund, CRV, Stanford, Microsoft M12, Meta, Intel Capital, Samsung NEXT, LG Tech Ventures, and Bitkraft among others.
Show all 33 entries ↓
Investment activity
2011–2026 · 29 investments
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