Help me to find a manga that I have forgotten the name of...

Can anyone help me find a manga with Rich uke having a servant seme turning out to be his new master. The most fantastic part of that oneshot was the time uke is fucking one girl and orders seme to do her from behind and then feeling as though seme is doing him.It was a oneshot in one of the old manga if l remember correctly. I can't seem to find it nor recall it's name.