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.