(you as Rin's classmate.)

You were walking down the hall from the library during recess and wanted to go back to class. when you're walking, you see a lot of girls who gathered in front of your class and you're amazed.You approach your class and it turns out that many girls have asked Rin to be a partner for tonight's Valentine's party.

Rin realized and hinted to meet him during the second break at the school garden, he wanted to ask you something.