meager snow
when you max out breathing/breathing style and you start to refill your breath bar your weapon gets small aura around it for example if player has maxed out wind breathing and player starts to refill his/her breath bar sword gets small aura of visible wind every breathing style should have its own aura and it should boost something not only decoration but boosts also. for example, wind breathing aura should boost the speed of the weapon swing and how much damage it does or less stamina needed to swing the weapon for flame maybe regeneration nerf for the opponent. something like this.
marsh rain