Infinite Darkness! Eternal Light!
After the disappearance of Hikari, the girls learn that she isn't remembered by anyone; although they know that something is missing. As the girls try to find her, the Evil King's resurrection isn't far off and the city is shown to be at risk.
Aired 15/01/2006EP 45 - Infinite Darkness! Eternal Light!
2005
PreCure Max Heart
Shortly after the fall of the Wicked King, the Queen of the Garden of Light lost her memory and came to Earth, in the form of a 12-year-old girl named Hikari Kujou. Now, she - with the help of Nagisa and Honoka, endowed with new costumes and powers - must find the 12 Heartiels, which hold the key to restoring the Queen's lost memories. For together once again, they are Pretty Cure.
(Source: AniDB)