Nanoha and Chidori are best friends who attend the same all-girls high school--and also share a heart-pounding secret: they're lovers. Through sunny days and tumultuous storms, they're always ready for new adventures together.

Sunshine and storm clouds await Nanoha and Chidori as they head into their first summer as a couple. They'll need to be ready for all sorts of thrilling activities, like an aquarium date, Chidori's birthday, and their first sleepover--with all of their friends, of course. Even while hiding their relationship, the pair spend their precious time together treasuring each other.