Tenryuu Armor

Tenryuu Armor (lit. "Heavenly Dragon Armor") is a Noble Art of Ouma Kurogane.

Description
Tenryuu Armor is a passive Noble Art, that increases the users durability. It surrounds the users body with an armor of wind, which binds his body with incredibly high pressured air, which puts a load on his body, pushing his body to become more durable. By constantly having this technique active, Ouma has increased his muscle and body densities to ten times of a normal human, making his body comparable to steel, being able to resist nearly any attack. The armor also provides protection to the user, like an actual armor.

Weakness
The technique, though it increases the users durability, decreases the users speed as long as it's active.