Airless World Technique

Once he is immersed in layers of steam, Ryōshi can disperse his chakra in the air, changing the chemical properties of the molecules contained in the steam to alter its structure and shape. So Ryōshi can create from the steam any type of gas he wants - which often change according to his emotions, although he may command them according to his will.

Variants
The type of gas created from the steam has different colors for each triggered effect.
 * Red gases represent poisonous gases, able to knock out his opponent instantly if inhaled or even kill them. This gas can arise if Ryōshi use the dragon seal or when he's angry.
 * Green gas representing sleeping gas that stun and force his opponent to fall into a deep sleep for several hours. This gas comes when Ryōshi uses the ram seal or when he is calm.
 * Yellow gases are gases that confuse the senses of the opponent and even their sense of allies and enemies. This gas comes when Ryōshi uses the bird seal or when is apprehensive.
 * Blue gases are paralyzing gases that may arise when Ryōshi uses the ox seal or when he's scared or insecure.

Trivia

 * Ryōshi can use this technique from Dendō Hōzuki's Hiding in Mist Technique.
 * Using more than one hand seal or being emotionally confused, Ryōshi can expel more than one gas at the same time.
 * This jutsu's name comes from one of Caesar Clown's gas techniques Karakuni, from One Piece.