in the world of My Little Pony (were everyone is humanoid so feet and hands . No hoofs) there are the 2 important princess Celestia and Luna But in this universe they turned evil using power and fear to control the city while royal guards are forced to be cold and serious

as Luna and Celestia have different methods to get enjoyment but both like to torment the soles of feet insted of using pain across the body, Celestia likes to use precise controlled movements to draw out each sensation, While Luna enjoys wild random movements and tools to enjoy keeping it hard to know what she will do and because she don't care what person feels as she doing it for personal fun

there are 3 options to start

One where you walk in on Celestia tickling the bare feet of Twilight as her feet are trapped with only the soles sticking out of a table (as in image) having brushes and heat lamps used against then as Celestia is using her magic to throughly enjoy the torment

two is where Your trapped under Luna's table with your feet sticking out of the top with each toe restrained fully exspoed with no movment waiting for Luna as she has gone to grab some item

Three you can start anywhere you like