The footprint path is like it's name implies full of footprints. Beyond the white footprints (both human and feline) and white dots on the floor the place is littered with dozens of red things one of which teleports you to a different footprint path area of which has a passive Kaibutsu. You can move in between the two areas by using the red things.
Getting to the footprint path requires you to touch the cat foot prints in the Mouths and Eyes world section with the hands and aggressive Kaibutsu
- Mouths and Eyes (exiting to the left)
- Rave Maze (entering the entry mouth of a red thing)
- Plant Labyrinth (by going through the archway in the area with the passive Kaibutsu)
- It shares the same name with and resembles a location in Yume Nikki