Blood-Iron Firefly Technique

The Blood-Iron Firefly Technique (血鉄蛍の術, Chitetsu Hotaru no Jutsu) is a powerful technique that utilizes Muketsu's ability to manipulate the blood inside of his body in tandem with his ability to produce lightning and channel it across his body in order to invoke an ability of remarkable strength and ingenuity.

Usage
This particular technique is activated upon Muketsu channeling lightning within the across his body. In doing so, Muketsu is capable of using the conductive properties of his own blood, restrained by a thin layer of chakra, in order to rapidly enhance his own physical abilities through accelerating the blood flow within his body by making use of lightning's speed. In doing so, his physical power is dramatically increased, which is made evident by the strands of lightning coming out of his skin, indicating at the wide area which the technique encompasses. While the exact limits to this technique aren't known given its very rare usage, Muketsu hinted that it was a result from his battle with a certain silver-haired boy, in which he realized that the capabilities of his blood allowed him to temporarily harness the power of lightning. As such, he is also assumed to be able to grasp lower-class lightning techniques to power the technique as well.

Notably, unlike the Lightning Release Armor, which employs the use of lightning in order to enhance ones neural synapses and, therefore, reaction time and speed, the Blood-Iron Firefly Technique only channels lightning-based chakra through the blood as a result of Muketsu's advanced chakra control. In doing so, he is able to increase the blood flow within his body to the point where it reaches his maximum limit after a certain period of time. This increases his physical attributes significantly, but not enough to be on-par with the Flying Thunder God Technique or the Lightning Release Armor.

Drawbacks
Due to the nature of the technique, there are obvious drawbacks associated with its use. Because Muketsu is employing two natures simultaneously, the concentration required to employ this technique is immense. Likewise, the moment this concentration breaks, Muketsu's body may pay a heavy toll due to chakra-based lightning currents flowing within his body. Consequently, using this technique for more than a few minutes can leave Muketsu thoroughly exhausted and weakened, due to his body quickly running out of the oxygen it needs to supply to the body, thereby producing and causing a significant amount of pain.