Hi, I’m Hiro.

Co-Founder and CEO of Hotaru Inc.
Co-Founder and COO of SIVIRA Inc.
Founder of BitBiteCoin.com
Adviser at GMO Internet Group
Adviser at OKWAVE

After encountering my first Macintosh computer at home when I was a kid, I learned the joy of creating through a computer. Right after that, I was strongly influenced by a tv program on Marc Andreessen’s Netscape-driven internet revolution.

As a middle-schooler, I visited the US for the first time and encountered the phenomenon that would later be termed the dot-com bubble. This was when I decided to pursue a career in the tech industry.

Back in Japan, I devoted myself to software development. After tasting initial success by creating a mobile website, I founded my first startup at the age of nineteen. Since then, I have been involved in numerous internet-based startups in fields including mobile applications, cloud hosting, IoT semiconductors, and have founded companies in Japan, Singapore, Taiwan, and the US.

I was inspired by the emergence of Bitcoin and its aim to create a decentralized society, and since then, I have chosen to focus my work on Bitcoin and Blockchain. In 2013, I founded the website BitBiteCoin.com to provide news about Bitcoin. In 2015, I co-founded a company called SIVIRA to research and develop Blockchain in order to establish an “economic zone of autonomous and decentralized data” aimed at the IoT market. Furthermore, in 2017, I founded a startup studio specializing in Blockchain technology, Hotaru Inc. It was the evolution of a company that was originally founded in the US in 2016, dealing with asset management of cryptocurrencies and ICO investments.

I currently serve as an advisor and Japanese representative of several companies involved with Bitcoin, such as GMO Internet Inc., and Genesis Mining.

On a different note, as a person who shuttles frequently between Tokyo, Asia, and the US, I am a permanent Airbnb resident. I am also the author of a number of popular blog articles concerning the Evangelion anime series.


Hotaru 共同創業者兼 CEO
BitBiteCoin.com 創設者
GMO インターネットグループ顧問

6歳の時、自宅にあった Macintosh に出会い、コンピュターでものを作る喜びを経験する。11歳の時、テレビで見た Netscape と、Marc Andreessen が起こした革命に強い衝撃を受ける。そして、中学生時代。アメリカ西海岸を訪れ、後にドットコムバブルと呼ばれる現象を目の当たりにする。その時、テクノロジー業界での起業という生き方を決意する。

帰国後、ソフトウェアの開発に没頭。学生時代に作成した i-mode サイトのヒットで感触を掴み、19歳で起業。以降、モバイルアプリ、クラウドホスティング、IoT 半導体等、インターネット関連の複数のスタートアップに携わり、日本、シンガポール、台湾、アメリカで起業をする。

ビットコインの登場以降は、非中央集権社会を実現するそのテクノロジーに感動を覚え、ビットコイン及びブロックチェーンの事業に力を注ぎ始める。2013年にはビットコイン関連ニュースサイト BitBiteCoin.com を立ち上げ、2015年には IoT 市場をターゲットとして「自律分散データ経済圏」の実現を目指すブロックチェーン研究開発企業 SIVIRA を共同創業。また、2016年にアメリカで創業した仮想通貨資産管理及び ICO 投資会社を発展させる形で、2017年にブロックチェーン技術に特化したスタートアップスタジオ Hotaru Inc. を共同創業。
その他、GMO インターネットや GenesisMining など、複数の Bitcoin 関連企業のアドバイザーや日本代表を兼任している。

ちなみに、東京、アジア各地、北米とを頻繁に行き来するため、Airbnb で暮らすホームレスでもある。あと、エヴァンゲリオンの記事が人気。

Latest Projects


BitBiteCoin provides No.1 search result on Google with a keyword “ビットコイン” which is a Japanese term for Bitcoin.

BitBiteCoin.com will focus on the vision of bitcoin and blockchain technologies, and aim for media that can deliver the thoughts behind the basic technology that will create the future world and the thoughts of people related to it.

When the Internet was invented, a lot of people studied about the Internet, or how to use a browser. However, such information is not left in this society anymore. What remains now is a browser derived from Netscape and a large number of Internet related companies. When the Internet was invented, Jeff Bezos used the basic technology of the Internet and thought about selling books. The business expanded from books to daily necessities and it created an infrastructure that produces many startups in the form of AWS. And now, they have expanded their business to build next-generation delivery system using drones to change the world.

We think people who are paying attention to bitcoin are the same as those who paid attention to the Internet in the past. I’m sure that the next Larry Page and Sergey Brin, Mark Zuckerberg, Jeff Bezos, will be born from those who are reading this page. We decided to continue to this website to help those innovators.


SIVIRA is a startup that specializes in the research and development of Blockchain, aims to establish an “economic zone of autonomous and decentralized data.”
The team has recently garnered attention for receiving investments from numerous listed companies, as well as the world’s leading Bitcoin exchange, bitFlyer.

Hotaru Inc.

Hotaru discovers talented teams with great ideas, nurtures their ideas, and connects them with those who want to support innovation and social impact. Our vision is the decentralized world where the true impact innovations are supported by the power of the public.


Largest Cloud Bitcoin Mining Company.

GMO Internet

One of the most comprehensive providers of Internet services in Japan.


Bitcoin portal website.

Bitcoin & Blockchain School

Investment analysis, core technology, business development, and entrepreneurship. A community where members receive information from around the world, delivered in real time by experts in each field.