Kitsunebi-ryu allows the user to generate, attack with, and cut through fire.
This ability allows Kin'emon to cut through flames and explosions while completely protecting himself from harm, giving it a strong defensive use. For offense, the generated fire enhances Kin'emon's regular attacks and is useful against creatures susceptible to heat.
This style can further be used for first aid, with the fire being capable of cauterizing potentially deadly wounds.
Roronoa Zoro, having seen Kin'emon use this fighting style, later uses it to cut Prometheus in half, then started combining it with his own techniques.
Homura Saki (焔裂き,Homura Saki?, literally meaning "Flame Split"): Kin'emon slashes his sword to slice an incoming fire attack. This was first used to cut through an explosion caused by pieces of Smiley and was first named when slicing through the flame breath of one of Vegapunk's dragons. This attack was used again against Kaido, slicing through his Bolo Breath and wounding him at the same time. In the VIZ manga, this is called Blaze Slice, and later Flame-Rend. In the Funimation adaptations, this is called Flame Split.
Karyu Issen (火柳一閃,Karyū Issen?, literally meaning "Firework Flash"): Kin'emon leaps into the air to attack with a powerful flaming slash. This was first used to defeat one of Vegapunk's dragons. This technique is similar to Zoro's Hiryu: Kaen technique. In the VIZ manga, this is called Fire-Willow Flash. In the Funimation adaptations, this is called Flaming Flash.
Homura Saki (焔裂き,Homura Saki?, literally meaning "Flame Split"): One of Kin'emon's techniques performed by Zoro, which was able to split the sun homiePrometheus in half.
Homura Saki: Rokudo no Tsuji (焔裂き 六道の辻,Homura Saki: Rokudō no Tsuji?, literally meaning "Flame Split: Crossing of the Six Paths"): Using Santoryu's Rokudo no Tsuji and Homura Saki together, Zoro continuously cuts flames into several small pieces within seconds. It was first used against Prometheus, rendering him weakened for a considerable time by increasing the effort it needed to reform.