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.

The couple cherishes each other while hiding their relationship from their friends. Chidori can't help but cheer on her super-cool girlfriend during gym class, and Nanoha wants to flirt while the rain pitter-patters on the umbrella they're sharing, no matter who might be listening. The seasons pass from spring to winter, but their relationship only grows warmer as time marches on.