A material I made based off of Shin from the Project Moon universe, contains a particle emitter prefab and material. Installation: Drag and drop prefab into avatar, connect to whichever bone youd like. For the added effect of the particle always being behind the model, select all materials in your model, go to stencil settings, set stencil reference value to 1 and stencil pass op to Replace. Dependencies: Poiyomi 9+