Any movie with Haruka Fukuhara will be great. Love Girl showcases her acting, singing, and dancing skills. She makes you fall in love with her character. I have watched her in Good Morning Call dozens of times and do the same now with Koe Girl. She brings out the sweetness and innocence of her characters.
Koe Girl almost seems autobiographical. Haruka started as a 5yr. old actress before starting on TV as Mine Chan in I! My! Mine! Cooking Idol. She then did the voice when the series animated. She appeared in the 20th Anniversary special of Sailor Moon for MTV. She danced and sang the Princess Moon piece. You can find clips of her voicing the songs for the Cooking Idol series and many appearances doing her Nameko song/dance for her adoring children fans. As in Koe, she connects well with kids . I bought a copy of the KiraKiraPreCure production and treasure it.