DO YOU KNOW THIS??

DO YOU KNOW A BL MANHWA WHERE THE TOP AND THE BOTTOM SOMETIMES CHANGE THEIR POSITION? FOR EXAMPLE THE TOP BEING THE BOTTOM FOR ONE ROUND OR SMTH. I THINK THERE ARE BARELY MANHWAS WHICH CONTAIN THAT BUT I THINK THIS WOULD BE VERY HOT AND EXCITING!!! IF YOU KNOW ANYMORE PLEASE TELL ME! (I SEARCHED BUT DIDNT FIND ANY)
PLEASE HELPPP MEEE