Mist Breathing is taught by Muichiro Tokito, behind the Hokkaido Town sitting on a bench.
There are currently 4 Forms which are:
<Level 15> First Form: Low Clouds, Distant Haze
The Player is a mediocre attack that gets damage when the enemy is in the way
<Level 35> + Final Selection Completion (Rank: Mizunoto)>
Second Form: Eight Layered Mist.
You create a barrage of mist slashes with medium range. This skill has collateral damage. (It can hit multiple targets.)
<Level 75> Third Form: Scattering Mist Splash
You create a mist projectile with long range. Also has collateral damage. (can also hit multiple targets.)
<Level 170> Forth Form: Sea of Clouds and Haze
You use the first form and third form at the same time and it has good range. Also has Collateral damage. (can also hit multiple targets.)
Quest to achieve :
<Level 15> 1st Quest: Mist Parkour
<Level 35> 2nd Quest: Defeat Muichiro (2%)
<Level 80> 3rd Quest: Defeat 6 Weak Demons, 8 Slightly Weak Demons and 10 Abnormal Demons
<Level 170> 4th Quest: Defeat Yahaba, 10 Abnormal Demons and 5 Abnormal Mutated Demons