Nijiiro Prism Girl

A sixth-grade girl named Nijika Kohinata, who is tall and attractive but hides her true age, lives away from the entertainment industry. Her mother, a famous actress, died from an illness, and Nijika conceals her family background. She also keeps secret her living situation with Ichinose Touya, a prince-like actor. While running an errand with her pet Kapitama-kun, Nijika stumbles upon a drama set in need of an actress after one falls ill. She offers to take the role.