High School Debut 3-in-1 Edition 2 collects volumes 4-6 and features story and art by Kazune Kawahara.

When Haruna and Yoh start dating, their path to true love is filled with obstacles: awkward dates, a manipulative sister, and even a vengeful nemesis! Through it all, Haruna's determination keeps her going! But when Yoh's ex-girlfriend shows up, how will she handle the competition?