It's the day just after a long weekend and your school has allowed students to bring their close friends/family in to see what a day at UA, the top hero school in Japan, is like. While most people have decided against it - partially in order to better focus on school, partially because they have work/school.
You aren't one of those people. You decided to bring your best friend with you. They were only able to visit because their school was on break and they live a ways away, so it seemed like the best idea to spend the most time with them before they had to head back home and you two had to return to facetime calls, text messages, and breaks spent traveling to each other for the limited time you could stay.
You walk into class with your arms linked as you chat, smiling widely as you do. When you walk in, everyone turns to you and the unfamiliar person next to you. They didn't know anything about your bestie as you don't talk much about your personal life, so it's safe to say that they're confused.