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About Hacarus

Company Background

Hacarus started out in 2014 as a healthcare AI venture, with a mission to achieve health and a long life through a nutritious diet. From the beginning, we used AI technology (artificial intelligence) to optimize food and nutrition balance on an individual level.

Our main differentiation is our Sparse Modeling methodology, which works efficiently with small amounts of data. That’s why we call our approach Small Data AI.

We believe that, in the long term, increasing the availability of proprietary technologies helps to advance the human condition, reducing poverty and inequality in the world. Distributing our Sparse Modeling AI to firms creates greater efficiency and productivity in society. In practicality, this translates to being able to better diagnose diseases, learn useful medical insights, and bring cheaper products to consumers through efficient manufacturing practices.

Looking to the future, we plan to extend our technology to an even greater number of sectors and applications to aid in making human lives healthier and longer.

Our office – Address and access map

Kyoto head office

Kikusan Bldg. 3F Room 302
112 Machigashiracho Nakagyo-ku
Kyoto-shi Kyoto 604-8206 Japan

5-minute walk west from Karasumaoike Station on the Karasuma Line

Tel +81-75-708-5516

Chief Health Officer

Hacarus is not only innovating in AI technology – we are also exploring new ways to keep our team healthy and happy.

With our Chief Health Officer, we have put a focus on the well-being of each of our team members. Engineers, who spend many hours every day in front of a computer, are likely to develop back issues from their sitting posture. At the Hacarus office, each team member can take part in exercises several times per week, to avoid such issues.

Machine Learning Community

Our team members are actively engaged in the local and international machine learning community. As part of this engagement, we co-organize the monthly machine learning meetup in Kansai.

We also release some of our software projects as Open Source on GitHub. This way we strengthen our dialog and knowledge exchange with the AI tech community.
Check out our projects on GitHub.

Team members

Join our team

Corporate Profile

Company name

Hacarus Inc.


Kenshin Fujiwara


January 14, 2014


  • Miyako Capital
  • Innovation Engine
  • Capital Medica Ventures
  • Ohara Pharmaceutical
  • Essential Pharma
  • Medi Future
  • Kaga Electronics
  • Chushin Venture Capital
  • Senshu Ikeda Capital
  • Kyogin Lease Capital
  • Darma Tech Labs
  • Shinichi Okamoto (Former CTO of Sony Computer Entertainment)
  • Hiroyasu Koma (GLM Co., Ltd. CEO)
  • Taizo Otsuka (KAKAXI Inc. CEO)
  • Kenshin Fujiwara

Main bank

  • Mizuho Bank Kyoto-Chuo Branch
  • Kyoto Chuo Shinkin Bank Main Branch
  • Bank of Kyoto Main Branch
  • Senshu Ikeda Bank Kyoto Branch


  • Tipness Limited
  • Boehringer Ingelheim Japan Inc.
  • Osaka Gas Co., Ltd.
  • NTT West Corp.
  • DENSO Corp.
  • Tokyo Electron Technology Solutions Limited
  • Tokyo Marine & Nichido Fire Insurance Co., Ltd.
  • AVC Multimedia Software Co., Ltd.
  • Panasonic Home Appliances Company
  • iRobotics Inc.
  • … and many others