The heroine is lazy and has a suite.
The male protagonist is noble, cool and has a mysophobia.
Two people who dislike each other go from being under the same roof to sleeping in the same bed.
At the beginning:
"Have you been picking your hair all day? Have you washed your hands? Stay away from me."
"Why are you talking? I was racking my brains for academics, and I wash my hair every day!"
Later:
"I've washed my hands, can I hug you?"
"It's a waste of time, why don't you come here quickly!"