Kibou no Chikara: Otona Precure '23 EP3 - Memories of the Heart

Nozomi suddenly changed into her middle-school self and transformed into a Precure, then fought off the Shadows. Even though disaster was avoided, the purpose of the Shadows and why Nozomi was able to transform into a Precure again remain shrouded in mystery. Meanwhile, Karen, who became a doctor, has been facing her own troubles recently.