Masamune-kun's Revenge

Masamune Makabe's childhood was marked by rejection from Aki Adagaki, who nicknamed him 'Piggy' due to his weight. After dedicatedly working out, he's now a high school student with a newfound physique, but also a narcissistic attitude. His goal is to exact revenge by having Aki fall in love with him, only to reject her later. The tables are turned when he transfers to Aki's school, and his initial attempts at forming a relationship with her fail miserably.