Steel Release: Stahl Herz is a supplementary Steel Release technique that increases the defensive and durability of the steel. This is done by adding steel nature chakra into the created steel to strengthen it. This can also be done by manipulating ones chakra to mold and compress the precious minerals found in the ground to create steel. This technique can be very useful in a battle since the user can increase the strength of the steel to counteract the opponent. However, the stronger the steel, the heavier and slower it becomes. As well, it tends to drain more chakra compared to lighter, weaker steel. The user can also weaken the steel by removing steel nature chakra from the created steel. However, the user is unable to reapply the steel nature chakra once he or she takes it off. The us