15th Rock

15th Rock Ventures LLP is a venture capital firm based in Tokyo, Japan, founded in 2019. The firm specializes in seed and startup stage investments, focusing on the fields of human augmentation and information technology. Its investment portfolio includes sectors such as robotics, electronics, augmented and virtual reality, brain-machine interfaces, biotechnology, and IT. By targeting these innovative areas, 15th Rock Ventures aims to contribute to a better future and enhance the quality of life in an era characterized by longer lifespans.

Takeshi Minamoto

General Partner

Tetsu Nakajima

General Partner

Yasuharu Watanabe-san

Venture Partner

8 past transactions

Bisu

Seed Round in 2021
Every day we flush precious information on our bodies down the toilet. Bisu helps people capture these data and lead healthier, happier lives. Our product is a home health lab that provides personalized advice to help you look, feel and perform at your best, through easy, accurate urine and saliva tests. We are graduates of HAX, the world's leading hardware accelerator, and have won numerous awards including Johnson & Johnson Innovation, MedTech Innovator, the Edison Awards, UK Tech Rocketship Awards and the British Business Awards. At CES 2020 we won the IHS Markit Innovation Award and were named by CNET as one of the top health-tracking devices.

Onera B.V.

Series B in 2021
Onera B.V. specializes in sleep diagnostic solutions and services, addressing various sleep disorders such as insomnia, sleep apnea, and narcolepsy. Founded in 2017 and based in Eindhoven, the Netherlands, the company utilizes innovative sleep diagnostic patch systems that collect and analyze sleep data to enhance the diagnosis of these conditions. As a spin-off of imec, a leading research center in nanoelectronics and digital technology, Onera aims to advance sleep medicine and improve the quality of life for individuals struggling with sleep-related ailments. By providing accurate, comfortable, and user-friendly diagnostic solutions, Onera seeks to deliver critical insights to millions who face undiagnosed sleep disorders.

TENT Japan

Venture Round in 2021
camping equipment rental service
Additive Manufacturing Technologies specializes in automated post-processing solutions for 3D printed parts, targeting high-volume production across various industrial sectors. The company integrates advancements in material science, chemistry, hardware engineering, robotics, and machine learning to enhance the quality and reliability of 3D printed components. By focusing on the post-processing phase, AMT helps companies optimize their additive manufacturing facilities, improving efficiency and reducing lead times and manufacturing costs. Their technology supports a seamless digital workflow, enabling clients to meet market-ready specifications effectively and scale up production capabilities.

Longan Vision

Seed Round in 2020
Longan Vision is a company that focuses on developing smart goggles to improve work experience and efficiency. They offer more intelligent public service by providing professionally engineered products to face future challenges. Not only are they making one product, but they are also building a network to link everyone together.

Sun Asterisk

Venture Round in 2020
Sun Asterisk is a software company provides software services.

Gojo & Company

Series C in 2019
Gojo & Company Inc. is a holding company based in Tokyo, Japan, that operates through its subsidiaries, including Microfinance Delta International and Sejaya Micro Credit, to provide microfinance services. Founded in 2014, the company aims to enhance financial inclusion by focusing on developing countries. Gojo supports the formalization and growth of micro, small, and medium-sized enterprises, with the long-term objective of delivering high-quality, affordable financial services to over 100 million unserved and underserved individuals across more than 50 countries by 2030. As of now, Gojo has established a presence in Cambodia, Myanmar, Sri Lanka, and India, employing over 3,400 individuals and serving more than 570,000 women, many of whom are mothers.

Onera B.V.

Series A in 2019
Onera B.V. specializes in sleep diagnostic solutions and services, addressing various sleep disorders such as insomnia, sleep apnea, and narcolepsy. Founded in 2017 and based in Eindhoven, the Netherlands, the company utilizes innovative sleep diagnostic patch systems that collect and analyze sleep data to enhance the diagnosis of these conditions. As a spin-off of imec, a leading research center in nanoelectronics and digital technology, Onera aims to advance sleep medicine and improve the quality of life for individuals struggling with sleep-related ailments. By providing accurate, comfortable, and user-friendly diagnostic solutions, Onera seeks to deliver critical insights to millions who face undiagnosed sleep disorders.
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