The Kusanagi style of ancient martial arts is the main fighting style of the Kusanagi family. Originally, due to their family's treasure, it had weapon-based origins but it was adapted over the years to focus on utilizing the user's fists for their pyrokinesis abilities. It remains a legacy amongst the family's members and is traditionally handed down with each passing generation. The exception to this is Shingo, who was taught albeit jokingly by Kyo, and then later by Saisyu.