So, I start importing the character and the animation to Blender. There I can see the movement and start doing the mesh I need.
I started testing this idea using a hand painted tileable water texture I draw in Photoshop
Clamping the texture to scroll it once and testing a dissolve texture.
Here am I testing the mask of the slash in the initial part of the mesh. A dinamic mask in the X axis.
I want to add another animation, so I was blending the animations. Because when the second snimation started, the character moved to the initial position. Finally I founs a solution on Youtube for that issue and blend "the animations offset"
Working and testing ideas with the textures and the shaders to create some slashes panning over a mesh. I took the animations and the character of Mixamo for this :)