• According to Renaissance High School, many Japanese high school students are dissatisfied with the traditional curriculum and prefer to study topics that are of personal interest or related to a potential profession.• Without a high school diploma, students have greater difficulty landing steady jobs, and the full-time employment rate of high school dropouts is relatively low, putting a strain on the nation’s social welfare system.1• Many Japanese high school students are dissatisfied with the inflexible, uniform content of their education and often suffer from loss of motivation.• In Japan, the need for digitization of education has been discussed for a long time; the government has just begun to focus on introducing digital textbooks.