[Because it is a short video, you can continue] It is an ultra-short video with an average of one and a half minutes, so you can continue watching without getting tired. All videos also come with exercises, making it easy to understand. Students can operate crisply with the smartphone app.[Improves motivation with the voice call function] Easy management of student situations at once. You can share your learning plan with your students and keep track of progress and comprehension. You can immediately approve (like) or comment without missing a student who is late.[Various uses with free teaching materials] Flexible usage is possible according to the teaching style of the cram school. The cost is very reasonable, and it can be used for various purposes such as class introduction, test preparation, and home study.