Kenten Generic is a special-purpose OpenType/CFF font that provides glyphs suitable for typesetting emphasis marks, which are referred to as "kenten" (圏点) in Japanese, hence the name of this OpenType/CFF font.
To build the binary font file from source, you need to have installed the Adobe Font Development Kit for OpenType (AFDKO). The AFDKO tools are widely used for font development today, and are part of most font editor applications.
In this repository, all necessary files are in place for building the OpenType/CFF font, and the COMMANDS.txt file provides the command lines that are used.
For any suggestions for changes, please create a new issue for consideration.