A Japanese yo-yo brand. In German, "STURM" means "storm/attack" and "PANZER" means "armor/tank", and is also known as the "Armored Assault Division". Based on a unique concept, it is developed with a different approach from other yo-yo manufacturers and brands. "The key to the brand is the story. The story progresses in the form of a mini-novel with illustrations, and not only the yo-yo itself is released, but also the world view created by the yo-yo. The true purpose of Sturm Panzer is to complete the "story." (Quoted from the manufacturer's official website) As such, the yo-yo itself is released with the story as the main axis, and all of them are high-performance models created by precise calculations. By focusing on the pure ease of use and promotion of yo-yos, and the continuous stable supply of products, the popularity gradually spread, and it has a strong fan base overseas. The story was finally completed in December 2018 with the 14th volume.