Yes, there are significant differences between Koryū from different regions of Japan due to the influence of factors such as geography, history, and local traditions. For example, kenjutsu (Japanese fencing) schools in the Kanto region may focus on more agile and faster techniques, while in the Kansai region more robust, strength-focused styles may be favored. These regional variations in koryū reflect the cultural diversity and historical particularities of Japan.