You can post to the Nikoni 3D model "Rendering images of 3D models and images under construction" "Unity model" "MMD model" "Runtime model (Corresponding model file with obj, mqo extension)", the ...

MMD Tools is a Blender add-on for importing MMD (MikuMikuDance) model data (.pmd, .pmx), motion data (.vmd), and pose data (.vpd). Exporting model data (.pmx), motion data (.vmd), and pose data (.vpd) ...