Image imported from derpibooru 
Original Description:
 
Part IV/IV
 
Luna showers off the rest of the bubbles and oils from her mane, tail, and body before extinguishing the flow and returning the shower to atop the faucet. She eases herself back into the empty tub and sighs. The basin still retains the heat from her bath, as well as her orgasmic experience, so she finds it quite comfortable. Luna closes her eyes as she feels sleep finally take over. Despite a long night, the bath and sex made it all worthwhile.
 
Luna Base by emu34b, linked as the source!