GENKI: An Integrated Course in Elementary Japanese is a study resource for people who are starting to learn Japanese. It is designed to comprehensively build communication competencies across all four skill areas–listening, speaking, reading, and writing. GENKI consists of 23 lessons, divided into two volumes of textbooks and workbooks. Vol. 1 contains Lessons 1-12, and Vol. 2 covers Lessons 13-23. The audio material of the textbooks and workbooks can be downloaded and played on mobile devices by using an app called OTO Navi.