Tenryuu Armor

Tenryuu Armor (天龍具足, Tenryuu Gusoku, lit. "Heavenly Dragon Armor") is a Noble Art of Ouma Kurogane.

Description
Tenryuu Armor is a passive Noble Art, that increases the user's durability. It surrounds the user's 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 user's durability, considerably decreases the user's speed as long as it's active. It also puts a very heavy burden on the body.