If you want a nice manwha with a satisfying switching couple, you should read Dark Heaven! It's one of my faves and it pictures a "realistic" relationship.
-- on the other hand, I enjoyed this one, I'll be really sad when the last chapter comes out!
So this is like the 12th time I've read this and I am CRYING LIKE A BABY. I watched the anime when I was a kid and I watched it again recently and I swore to myself not to cry because now I am an adult but HAHAHA NOPE You are still a baby and you will cry with EACH DEATH LIKE IT'S THE FIRST TIME.
"I'm a clean freak"
A couple of chapters later, proceeds to use the same toothbrush as the mc.