Basically add a skill tree for the breathing styles,
Way i see it
A) the skill tree lets u unlock those new moves as u level up, and buff certain aspects of those moves as well
B) u learn the breathing style with all the techniques, and the skill tree can still buff certain aspects of the move
And basically, add passives for the breathing styles, and different interactions too I guess
Flame-burn damage, if u want, they’re said to be very determined and passionate, as a battle goes on they get more determined increasing defense slightly
Wind- higher base speed, they’re very agressive, they do more block damage
Thunder- higher dash speed
Water- very defensive form, have greater blocking capabilities, longer parry duration(?)
Stone-slower m1, greater damage, destroyed objects could potentially be used for some of the breathing forms (for example in the manga he hits the ground so hard rocks come up and he hits them towards the enemy)
Mist-edit) mist’s passive was too op so I’ve changed it
For every dash u form a bit of mist in the area, making it a bit harder for the opponent to see, adding to the mist created by the moves themselves
Faster dashing speed
Flower- when hitting moves ur dashing length becomes faster
Sun breathing: burn damage, decreases demon healing speed,
Beast breathing: idk I’ll think of smthn: Edit immunity (or high resistance) to poisons and increased overall durability, serrated swords for more bleed damage
Insect: obviously has the wisteria poison, but should it be used on humans too?
Love- further m1 range, The movement options are faster and better due to the agility of the user
Serpent- a sword is not fully required(moves can be used whilst not having the sword equipped though it will be weaker),
The slashes do not match the animation fully due to the swerving and confusing nature of the breathing style,
Sound: the attacks have a second impact doing extra damage

ultra5343 You’ve Reached Level 1