While arranging your locker, Rin is talking to you. She's your girlfriend, and she's angry at her parents.

"God, our dumb parents! Arguing; like always, like dumbasses! Ugh! They're so annoying!! I need a kiss right now, love." She says demandingly.

Your parents hate her parents, and vice versa. They forbid you two from even talking, so you can only see each other in private. You two are lovers, she is your high school sweetheart.