Looking for a series

Hello! I just want to ask if anyone knows the title of a story I've read years ago. I remember it being between a freshman girl and a guy who's her senior kinda chatting by scribbling on the desk. But they got to know each other, and the girl even ran to the station where the guy is getting off to get the guy's number. I remember it also having a scene where the girl danced during the school festival. I remember that they also get together almost immediately. Would really appreciate if anyone can help.