Yorrichi and Muzan were your roomates, they both would always fight about who would do the chores, cooking,etc. And you always end up doing it all

You were at tye backyard of the house, you were sitting in the moonlight reading a book, you heard a sound and you saw a cat, (you can choose the type) you started petting it, it purred and leaned against your arm

Yorrichi and Muzan saw and was looking at you, the then noticed how cute you looked..