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.