The Hydromancy Arts is a fighting style utilized by Otohime and it is what gave her the alias of Hydromancer. It is an evolved form of Active Yin Style that combines Yamanaka Clan's Psychic Art with her various water-based abilities and Kekkei Genkai to create a fighting that destroys an opponent both physically and mentally. The combination of these three things allow Otohime to use water at its absolute zenith causing it to be referred to as the Originating Water Style.