As reported, 30-year-old ex-Takarazuka star Miyu Sakihi makes a guest voice appearance in the original anime film Ai no Utagoe wo Kikasete / Sing a Bit of Harmony.
She plays Moon, the main character in the film’s in-story anime Moon Princess.
Moon has been the protagonist Satomi’s idol since she was a child, and is the key character in the main story.