To live a wonderful life,
We want to keep creating value-changing experiences.

We defined YEAAH as a shocking experience or state of being that significantly changes an individual's sense of worth. We chose the name "YEAAH" because it is an experience that is even bigger than the English word "Yeah!" We think we all have more than a few memories in our lives that we will never forget. We are convinced that life will seem more wonderful if we can increase the number of such experiences. And if we can create such experiences all over the world, humanity as a whole will be better off.

Corporate Philosophy

We will realize a society in which as many people as possible can say, "I am glad to have been born" at the end of their lives.

Our goal is to help people experience more and greater "YEAAH" so that they can lead richer lives.

100 billion YEAAHs on Earth.

About Us

Company Name
Head Office
33-6, Ebisu-Nishi 1-chome, Shibuya-ku, Tokyo 150-0021, Japan
April 15, 2016
Keiji Mori, President

Majored in mechanical information engineering and brain information at university. After working at a patent firm, he joined a major consulting firm, where he mainly worked on organizational reform for large corporations. In 2016, he established YEAAH.
JPY 1.5 million
In-house service planning, design, development, manufacturing, and sales.
Smartphone application (iOS/Android) planning, design, and development.
Web system planning, design and development.
DX Promotion Business.
Planning, design, development, manufacturing, and sales of IoT devices.
Contract development and others.


33-6, Ebisu-Nishi 1-chome, Shibuya-ku, Tokyo 150-0021, Japan

3-minute walk from the East Exit of Daikanyama Station on the Tokyu Toyoko Line.
5-minute walk from the West Exit of Ebisu Station on the JR Yamanote Line, Saikyo Line, and Shonan Shinjuku Line.