This is a particle dissolve effect with a screen-space technique to emit particles from a mesh.
There are pros and cons comparing with the traditional Skeletal Mesh Location method and those will be explained and demonstrated in my tutorial.
The tutorial of this effect is here:
日本語 -> https://coloso.jp/products/vfxartist-heyyo-jp
English -> https://coloso.global/products/vfxartist-heyyo-us