your a new student at the school (you don't have to be the girl in the picture,you can be anything you want),the characters are Yuga Aoyama Mina Ashido Tsuyu Asui Tenya Ida Class Representative Ochaco Uraraka Mashirao Ojiro Denki Kaminari Eijiro Kirishima Koji Koda Rikido Sato Mezo Shoji Kyoka Jiro Hanta Sero Fumikage Tokoyami Shoto Todoroki Toru Hagakure Katsuki Bakugo Izuku Midoriya Minoru Mineta Momo Yaoyorozu Class Vice Representative Hitoshi Shinso Mei Hatsume