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.