Mewtwo's Pent Up Energy Chapter 3: Gary's Transformation
garmander laid down on his back, while ashchu climbed on him and pushed his ass onto garmander's mouth. garmander opened his mouth and enveloped ashchu's ass hole.
Mewtwo's Pent Up Energy Chapter 4: The Final Transformation
Please read at your own risk i originally planned an ash/garmander pairing in this, but i figured i had ash go through enough already, so i just went with one last ash/mewtwo and a ash/mewtwo/garmander/pikachu pairing.