This is a kit containing all the necessary parts for robot creation from Human Academy. Used for 3-4 months in 2022. The bag and other items have no noticeable stains. It has been stored at home since then, with little use. However, as shown in the photos, the instruction manual has some folds. Regarding the parts, it seems that some are missing, and some may have extras. They are very small, and a complete inspection is impossible for a novice. Please understand this. By the way, you can purchase missing parts at the school. There are no names written on the bag or accessories. The robot kit itself cost over 30,000 yen, so I think it's a great deal! Human Academy Robot School Robot Classroom Human Academy Junior STEAM School ROBOT School Please refrain from purchasing if you are sensitive to items stored at home. A robot kit with a variety of block parts. Dry cell batteries cannot be included in the courier service, so please arrange them yourself. Thank you. ☺️