Upon looking at the moon and performing the required hand seals, the moon turns a crimson blood red while covering the world in an ominous, penetrating red light. Through the radiance of this unique, red light, the user is able to bath and mark targets within an immense range with it. While it is normally used with the moon itself, if the celestial body is absence, Yosoi can amass a large sphere of blood from which the technique can be used from.