Masamune-kun's Revenge Special Edition: Masamune-kun is a Rental Boyfriend

As an overweight child, Makabe Masamune was mercilessly teased and bullied by one particular girl, Adagaki Aki. Determined to one day exact his revenge upon her, Makabe begins a rigorous regimen of self-improvement and personal transformation.

Years later, Masamune reemerges as a new man. Handsome, popular, with perfect grades and good at sports, Masamune-kun transfers to Aki’s school, and is unrecognizable to her. Now, Masamune-kun is ready to confront the girl who bullied him so many years ago and humiliate her at last. But will revenge be as sweet as he thought?

(Source: Seven Seas Entertainment)

Included Side Chapters:
Chapter 9.5: Investigative Report into Aki Adagaki
Chapter 12.5: A Fine Tradition of Stewardship
Chapter 14.5: Tsunade Island Incident Part 2
Chapter 20.5: Kojuurou Wants To Become A Dandy
Chapter 35.2: Piggy's Memorial Part 2