This is a complete set of Human Academy Robot Classroom kits. Some items are missing. Used up to the middle of the Advanced Course classroom until 2024. Parts were added as the courses progressed through the Basic, Middle, and Advanced Courses, but I believe some items are missing. I don't know which ones are missing, and I can't confirm how many of each part there are. Therefore, please understand this as a junk item. * One of the cases is not from the classroom. One is reinforced with tape (see photos). * The tablet is missing because the battery has deteriorated and is unusable. * The bag is also missing because it is tattered. This is not a perfect set, but it was originally quite expensive, so I think it can still be used. Thank you for your understanding.