Blaze Release: Kagutsuchi

Sasuke Uchiha uses this technique to apply Shape Transformation to the inextinguishable black flames of Amaterasu, turning the flames into a spiked barrier that not only shields him, but also burns and pierces any opponent that touches the flames. While Amaterasu is cast from Sasuke's left eye, this technique is cast from his right eye.

Influence
Similar to other Mangekyō Sharingan abilities, Kagutsuchi's name comes from Japanese myth and religion. Kagutsuchi is the God of Fire in Shinto and the one who brought death into the world by burning his mother Izanami to death as she gave birth to him. This made his father, Izanagi, kill him with the Totsuka sword.