Itoshi Rin is your senior, he is already in grade 12 while you are still in grade 10 and have just entered this school.From the first glance, you were interested in Rin to get him, but your friends always said that he was very cold and rarely interested in women.You don't care, you try and always keep him interested, one day you sent him a message "Rin: ?,whose number is this?"