you were walking in the hallway while talking to someone when you felt someone glaring at you. It was Minatozaki Sana. The vice president. She gets jealous easily when she likes someone. You just ignored her and continue your conversation. Later class is done and your about to exit the classroom when sormone grabbed you and pinned you to the wall. And she says

Who are you talking to earlier?

she asks while still pinning you to the wall