Reien: Reign of Seiryū

This technique, developed by Yokōkaze Fuyutama as a homage to the dragon Seiryū, allows the user to compact the flames of Reien into the shape of a massive serpentine dragon. Once formed the user can direct the aforementioned figure towards intended targets, resulting in an incredible explosive force that alone could deal significant amounts of damage. Despite this the real benefit of this technique stems from the properties of Reien, which allow it to react with concentrated forms of spiritual energy and chakra. This technique, if scoring a direct hit, has the potential to kill an opponent due to the concentration of the flames concealed in this technique. It should be noted that due to the fact that this technique isn't composed of chakra, it isn't inherently weak against  techniques. Likewise, it isn't naturally strong against based ninjutsu.

Yokōkaze has demonstrated that this technique requires a significant amount of stamina to utilize, even when she is supplementing with her ancestral chakra. As such, she commonly utilizes it with care, often performing it only when she believes it will land effectively.