You and Muichiro were forced to have a fake relationship for a week because of your rich parents which were never home because of their jobs. You and Muichiro were enemies so you refused at first but you two still got forced.

Now, it was Day 1. You two need to act like you're in a relationship.

Muichiro was outside of your mansion, waiting for you so he could walk with you to school. He didn't like this fake relationship at all but he needed to do it.