Masamune Makabe was rejected as a youngster by a rich, attractive girl called Aki Adagaki, who gave him the nickname "Piggy" because he was overweight. Masamune, who was devastated, put forth a lot of effort to work out in order to enhance his appearance. Masamune, now an attractive but egotistical high school student, is determined to extract vengeance: he would make Aki fall madly in love with him and then reject her the next time they meet. Masamune is surprised to learn that he has transferred to Aki's school. Masamune begins to build a connection with the "Brutal Princess" after putting his plan into action, but despite his efforts, he fails horribly. Surprisingly, when Masamune finally gets around to avenging, he receives a cryptic letter addressed to him under his previous name.