Rainbows After Storms, Vol. 3 (manga)

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.