Angel Bridge

Angel Bridge is an angel investor group based in Tokyo, Japan, established in 2015. The company focuses on providing high-quality funding to early-stage technology companies. By connecting investors with promising startups, Angel Bridge aims to foster innovation and growth within the technology sector, leveraging its expertise to identify and support exceptional business opportunities.

Masayoshi Hayashi

Partner

Yutaro Kasai

Founder and CEO

Past deals in Tokyo

Lisse

Series C in 2025
Lisse, established in 2018 and headquartered in Tokyo, Japan, specializes in developing and providing automatic contract review solutions. The company offers a 24-hour contract checking service, LeCHECK, which employs AI to support contract checking and creation. Additionally, Lisse provides LeTRANSLATE, a real-time, high-quality machine translation tool for English contracts. By combining legal expertise with technology, Lisse aims to enhance corporate legal affairs, mitigate transaction risks, and foster a dispute-free society.

SmartRyde

Series A in 2021
SmartRyde is a Tokyo-based company founded in 2017 that specializes in airport transfer services. It operates a reservation platform that connects travelers with a wide variety of transportation options from over 650 operators worldwide. SmartRyde’s platform is designed to facilitate safe and seamless airport transfers, allowing users to pre-book their rides from a diverse selection of car models. The company also collaborates with more than 25 online travel agencies, including major players like Booking.com and Expedia, to enhance its service offerings. By focusing on customer support and ease of use, SmartRyde aims to make travel more comfortable and efficient for its users.

SmartRyde

Seed Round in 2018
SmartRyde is a Tokyo-based company founded in 2017 that specializes in airport transfer services. It operates a reservation platform that connects travelers with a wide variety of transportation options from over 650 operators worldwide. SmartRyde’s platform is designed to facilitate safe and seamless airport transfers, allowing users to pre-book their rides from a diverse selection of car models. The company also collaborates with more than 25 online travel agencies, including major players like Booking.com and Expedia, to enhance its service offerings. By focusing on customer support and ease of use, SmartRyde aims to make travel more comfortable and efficient for its users.

Heartseed

Series A in 2018
Heartseed Inc. is a Tokyo-based biotechnology company founded in 2015, focused on developing myocardial regeneration medicine utilizing induced pluripotent stem (iPS) cells. The company's mission is to advance treatments for heart disease through regenerative medicine, specifically targeting advanced heart failure with iPS cell-derived cardiomyocyte replacement therapy. Heartseed aims to enable the clinical application of its innovative therapies to improve outcomes for patients suffering from heart conditions.

Heartseed

Seed Round in 2016
Heartseed Inc. is a Tokyo-based biotechnology company founded in 2015, focused on developing myocardial regeneration medicine utilizing induced pluripotent stem (iPS) cells. The company's mission is to advance treatments for heart disease through regenerative medicine, specifically targeting advanced heart failure with iPS cell-derived cardiomyocyte replacement therapy. Heartseed aims to enable the clinical application of its innovative therapies to improve outcomes for patients suffering from heart conditions.
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