15th Rock

15th Rock is a venture capital investment firm established in 2019 and based in Tokyo, Japan. The company specializes in seed and pre-IPO investments, primarily focusing on the fields of human augmentation and information technology. It aims to create a better future and enhance quality of life in light of the increasing longevity of individuals, targeting sectors such as robotics, electronics, augmented and virtual reality, brain-machine interfaces, and biotechnology. By investing in innovative companies within these domains, 15th Rock endeavors to contribute to advancements that support a fulfilling life in the era of the 100-year lifespan.

Hayashizaki Wataru

Principal

Past deals in Assisted Living

Nobi

Series B in 2025
Nobi is a smart lamp that ensures help can be provided in a flash in the event of a fall. It recognizes a fall, and it will notify a family member, contacts, or a specialized emergency call center. The lamp will then connect to that person to reassure them that help is on the way. If necessary, it can even unlock the smart lock on the front door.
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