During his childhood, Masamune Makabe was ridiculed by Aki Adagaki, a wealthy and attractive girl who labeled him "Piggy" on account of his weight. Determined to get revenge, Masamune worked hard to improve his appearance and became a conceited high school student with the mission of making Aki fall for him and then rejecting her. As luck would have it, fate brought Masamune to Aki's school, where he tried to establish a relationship with the "Brutal Princess." Despite his best efforts, Masamune's attempts failed until he received a mysterious letter addressed to his old nickname. Discovering who sent the message was crucial to his plan's success.