We Are One! Nagisa and Honoka's Powerful Bond
The Dark Zone figure out a way to separate Pretty Cure and it's up to Nagisa to find Honoka before she is consumed by the darkness!
Aired 05/12/2004EP 42 - We Are One! Nagisa and Honoka's Powerful Bond

2004
Precure
Nagisa Misumi and Honoka Yukishiro couldn't be more different. Nagisa is sporty and Honoka bookish, and while they attend the same school, they have very little in common - until one day, a shower of shooting stars brings two very unlikely visitors into their lives: Mipple and Mepple, refugees from the Garden of Light, which has been conquered by Darkness. Endowed with new and startling powers, Nagisa and Honoka become Cure Black and Cure White, magical defenders of the light - together, they are Pretty Cure.
(Source: Anime News Network)