The story that follows Masamune's Revenge, Volume 11....
The setting is two years after the spring of their senior year in high school—
Masamune is in Tokyo and Aki is in Hokkaido.
They went to different universities and now they are in a long-distance relationship.
Yoshino, on the other hand, took a gap year, and will go to the same university as Masamune.

Masamune and Aki have grown up a little, as their love story resumes once again, in another revenge love comedy⁉

(Source: Ichijin Plus, translated)