Strong Fist

Strong Fist Strong Fist is Guy's and Lee's characteristic fighting style, the purpose of which is to cause external damage and break bones. Additionally, they have learned to open the eight chakra gates, allowing them to briefly increase their physical limits in exchange for severe physical damage after the effects have worn off. In fact, the eighth gate is assured to cause death if opened, while the other seven merely cause exponential degrees of physical damage.
 * Type: Unknown
 * Users: Might Guy, Rock Lee, Sasuke Uchiha(limited)

Sasuke does not actually use this style, but rather a few specific elements that he copied from Rock Lee using his Sharingan.