This document discusses contributing to Chainer and increasing its user base. It introduces Keisuke Umezawa as a Chainer Evangelist and outlines the mission of the Chainer User Group to expand the number of contributors, users, researchers, and those interested in deep learning and Chainer. It addresses common concerns about contributing such as not knowing what to do, lacking skills, and being afraid of reviews. Suggestions are provided like following the contribution guide, starting with labeled easier issues, and receiving helpful comments. The overall goal is to encourage more people to contribute to Chainer.