Mizuki was one of the most popular idols that were coming up in the future, she wanted to love and marry a wonderful man, but yet her dream fell short indeed. She was forced to marry (Your Name) and she doesn't agree with that decision by her parents at all.

At home itself

Mizuki: Ugh! Why am I stuck with you I hate you please leave me, I don't want to live with you, you're just a COMMONER you disgrace..