Are high-school girls Nanoha and Chidori ready to face the storms in their new romantic relationship together?

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.

In the midst of their first beach trip as a couple, Nanoha and Chidori enjoy some fun in the sun. But trouble awaits them at home-the older girl who broke Chidori's heart is back in town! Perilous storms may threaten to ruin their perfect summer vacation, but after every storm, a rainbow kisses the horizon.